Input:
Sentence1: protein is used to repair cells by the human body.
Sentence2: Enzymes provide cellular energy, repair tissue organs and cells.

Output: repair


Input:
Sentence1: Carbon dioxide is a greenhouse gas.
Sentence2: greenhouse gas concentrations in the air have increased over the last decade dramatically.

Output: gas


Input:
Sentence1: Carbon dioxide is a greenhouse gas.
Sentence2: greenhouse gas concentrations in the air have increased over the last decade dramatically.

Output: greenhouse


Input:
Sentence1: Platypus females lay their eggs in a burrow.
Sentence2: When the eggs hatch, the hen leaves the nest site.

Output: eggs


Input:
Sentence1: Ethologists usually study how animals behave in their natural environment.
Sentence2: Ethologists usually study how animals use instincts in their natural environment.

Output: Ethologists


Input:
Sentence1: Ethologists usually study how animals behave in their natural environment.
Sentence2: Ethologists usually study how animals use instincts in their natural environment.

Output: animals


Input:
Sentence1: Ethologists usually study how animals behave in their natural environment.
Sentence2: Ethologists usually study how animals use instincts in their natural environment.

Output: environment


Input:
Sentence1: Ethologists usually study how animals behave in their natural environment.
Sentence2: Ethologists usually study how animals use instincts in their natural environment.

Output: natural


Input:
Sentence1: Ethologists usually study how animals behave in their natural environment.
Sentence2: Ethologists usually study how animals use instincts in their natural environment.

Output: study


Input:
Sentence1: People eat food.
Sentence2: Eating has a positive impact on an organism 's health.

Output: eat


Input:
Sentence1: keeping food cold is used for keeping food fresh.
Sentence2: Keeping food at 40 degrees F or lower is used for keeping food fresh.

Output: food


Input:
Sentence1: keeping food cold is used for keeping food fresh.
Sentence2: Keeping food at 40 degrees F or lower is used for keeping food fresh.

Output: fresh


Input:
Sentence1: keeping food cold is used for keeping food fresh.
Sentence2: Keeping food at 40 degrees F or lower is used for keeping food fresh.

Output: keeping


Input:
Sentence1: Coral reefs provide food and shelter to many ocean organisms.
Sentence2: Coral reefs provide food and shelter to animals that require salinity.

Output: Coral


Input:
Sentence1: Coral reefs provide food and shelter to many ocean organisms.
Sentence2: Coral reefs provide food and shelter to animals that require salinity.

Output: food


Input:
Sentence1: Coral reefs provide food and shelter to many ocean organisms.
Sentence2: Coral reefs provide food and shelter to animals that require salinity.

Output: provide


Input:
Sentence1: Coral reefs provide food and shelter to many ocean organisms.
Sentence2: Coral reefs provide food and shelter to animals that require salinity.

Output: reefs


Input:
Sentence1: Coral reefs provide food and shelter to many ocean organisms.
Sentence2: Coral reefs provide food and shelter to animals that require salinity.

Output: shelter


Input:
Sentence1: Annelids have the amazing capacity to regrow segments that break off.
Sentence2: Modern examples are jellyfish, flat worms, and annelid worms.

Output: Annelids


Input:
Sentence1: Chloroplasts are organelles that are found in the cells of plants and algae.
Sentence2: pigments are found in algae.

Output: algae


Input:
Sentence1: measuring the hardness of minerals requires scratching those materials.
Sentence2: Getting a measurement on the Moh's scale requires scratching.

Output: measuring


Input:
Sentence1: measuring the hardness of minerals requires scratching those materials.
Sentence2: Getting a measurement on the Moh's scale requires scratching.

Output: requires


Input:
Sentence1: measuring the hardness of minerals requires scratching those materials.
Sentence2: Getting a measurement on the Moh's scale requires scratching.

Output: scratching


Input:
Sentence1: Humans start most wildfires.
Sentence2: humans can change ecosystems drastically.

Output: Humans


Input:
Sentence1: White fur is warmer than colored fur.
Sentence2: An animal's coat that is thick and white is warmest.

Output: White


Input:
Sentence1: Chemical weathering causes chemical changes in the minerals of a rock.
Sentence2: moss causes chemical changes in the minerals of a rock.

Output: changes


Input:
Sentence1: Chemical weathering causes chemical changes in the minerals of a rock.
Sentence2: moss causes chemical changes in the minerals of a rock.

Output: in


Input:
Sentence1: Chemical weathering causes chemical changes in the minerals of a rock.
Sentence2: moss causes chemical changes in the minerals of a rock.

Output: minerals


Input:
Sentence1: Chemical weathering causes chemical changes in the minerals of a rock.
Sentence2: moss causes chemical changes in the minerals of a rock.

Output: of


Input:
Sentence1: Chemical weathering causes chemical changes in the minerals of a rock.
Sentence2: moss causes chemical changes in the minerals of a rock.

Output: rock


Input:
Sentence1: Chemical weathering causes chemical changes in the minerals of a rock.
Sentence2: moss causes chemical changes in the minerals of a rock.

Output: the


Input:
Sentence1: Oncogenes promote the division of cells with damaged DNA.
Sentence2: cancer promotes the division of cells with damaged DNA.

Output: DNA


Input:
Sentence1: Oncogenes promote the division of cells with damaged DNA.
Sentence2: cancer promotes the division of cells with damaged DNA.

Output: cells


Input:
Sentence1: Oncogenes promote the division of cells with damaged DNA.
Sentence2: cancer promotes the division of cells with damaged DNA.

Output: damaged


Input:
Sentence1: Oncogenes promote the division of cells with damaged DNA.
Sentence2: cancer promotes the division of cells with damaged DNA.

Output: division


Input:
Sentence1: Oncogenes promote the division of cells with damaged DNA.
Sentence2: cancer promotes the division of cells with damaged DNA.

Output: promote


Input:
Sentence1: Ribosomes are small organelles where proteins are made.
Sentence2: the small organelles that make protein are assembled inside the nucleus.

Output: made


Input:
Sentence1: Ribosomes are small organelles where proteins are made.
Sentence2: the small organelles that make protein are assembled inside the nucleus.

Output: organelles


Input:
Sentence1: Ribosomes are small organelles where proteins are made.
Sentence2: the small organelles that make protein are assembled inside the nucleus.

Output: proteins


Input:
Sentence1: Ribosomes are small organelles where proteins are made.
Sentence2: the small organelles that make protein are assembled inside the nucleus.

Output: small


Input:
Sentence1: Smog contains particulates.
Sentence2: Particulates are matter suspended in air.

Output: particulates


Input:
Sentence1: conserving resources has a positive impact on the environment.
Sentence2: Recycling saves energy, conserves natural resources and helps protect the environment.

Output: conserving


Input:
Sentence1: conserving resources has a positive impact on the environment.
Sentence2: Recycling saves energy, conserves natural resources and helps protect the environment.

Output: resources


Input:
Sentence1: Food is converted into glucose.
Sentence2: Food is converted into the type of energy that most cells use.

Output: Food


Input:
Sentence1: Food is converted into glucose.
Sentence2: Food is converted into the type of energy that most cells use.

Output: converted


Input:
Sentence1: Bioterrorism is another potential threat in the environment.
Sentence2: Bioterrorism is always a criminal act.

Output: Bioterrorism


Input:
Sentence1: creating paper requires cutting down trees.
Sentence2: Trees begin as epiphytes on host trees.

Output: trees


Input:
Sentence1: Eggs are usually laid in a nest.
Sentence2: birds usually have nests.

Output: nest


Input:
Sentence1: Eggs are usually laid in a nest.
Sentence2: birds usually have nests.

Output: usually


Input:
Sentence1: a breathing mask is used for keeping harmful particles from entering the respiratory system.
Sentence2: Unlike larger particles, the smaller particles are able to enter the respiratory system.

Output: entering


Input:
Sentence1: a breathing mask is used for keeping harmful particles from entering the respiratory system.
Sentence2: Unlike larger particles, the smaller particles are able to enter the respiratory system.

Output: respiratory


Input:
Sentence1: a breathing mask is used for keeping harmful particles from entering the respiratory system.
Sentence2: Unlike larger particles, the smaller particles are able to enter the respiratory system.

Output: system


Input:
Sentence1: threatening behavior by predators causes a porcupine to extend its quills.
Sentence2: Porcupines are in the rodent family.

Output: porcupine


Input:
Sentence1: ultraviolet light causes sunburn.
Sentence2: Exposure to ultraviolet light can be relieved with cold vinegar.

Output: light


Input:
Sentence1: ultraviolet light causes sunburn.
Sentence2: Exposure to ultraviolet light can be relieved with cold vinegar.

Output: ultraviolet


Input:
Sentence1: contact between rocks over long periods of time causes rocks to smooth.
Sentence2: First, limestone is a strong rock.

Output: rocks


Input:
Sentence1: contact between rocks over long periods of time causes rocks to smooth.
Sentence2: Granite is rock formed by fire.

Output: rocks


Input:
Sentence1: Most organisms consume--and are consumed by--more than one species.
Sentence2: An organism is a living creature such as a plant or animal.

Output: organisms


Input:
Sentence1: Fractures heal when osteoclasts form new bone.
Sentence2: Fractures A fracture is a broken or cracked bone.

Output: Fractures


Input:
Sentence1: When a gas expands, it cools off.
Sentence2: If a gas is heated then that gas will cool off.

Output: cools


Input:
Sentence1: When a gas expands, it cools off.
Sentence2: If a gas is heated then that gas will cool off.

Output: gas


Input:
Sentence1: When a gas expands, it cools off.
Sentence2: If a gas is heated then that gas will cool off.

Output: off


Input:
Sentence1: the vanes rotating in an electric fan causes air to move.
Sentence2: fan speed is adjustable.

Output: fan


Input:
Sentence1: dropping an object into water causes vibrations in the water.
Sentence2: Fish are attracted by the vibration of the built-in action of the lure.

Output: vibrations


Input:
Sentence1: when a metal rusts , that metal becomes orange on the surface.
Sentence2: When steel rusts it becomes orange.

Output: becomes


Input:
Sentence1: when a metal rusts , that metal becomes orange on the surface.
Sentence2: When steel rusts it becomes orange.

Output: orange


Input:
Sentence1: when a metal rusts , that metal becomes orange on the surface.
Sentence2: When steel rusts it becomes orange.

Output: rusts


Input:
Sentence1: friction causes an object to lose energy.
Sentence2: Friction causes things to lose energy.

Output: causes


Input:
Sentence1: friction causes an object to lose energy.
Sentence2: Friction causes things to lose energy.

Output: energy


Input:
Sentence1: friction causes an object to lose energy.
Sentence2: Friction causes things to lose energy.

Output: friction


Input:
Sentence1: friction causes an object to lose energy.
Sentence2: Friction causes things to lose energy.

Output: lose


Input:
Sentence1: Mutualism is a symbiotic relationship in which both species benefit.
Sentence2: oxpecker birds help other species benefit.

Output: benefit


Input:
Sentence1: Mutualism is a symbiotic relationship in which both species benefit.
Sentence2: oxpecker birds help other species benefit.

Output: species


Input:
Sentence1: Opossums are a type of mammal called marsupials.
Sentence2: playing is one way opossums learn how to behave.

Output: Opossums


Input:
Sentence1: Sight is the ability to sense light, and the eye is the organ that senses light.
Sentence2: Vision begins with sight.

Output: Sight


Input:
Sentence1: Hatching is a prerequisite for embryo implantation in the uterus.
Sentence2: Embryo implantation is used in reproduction.

Output: embryo


Input:
Sentence1: Hatching is a prerequisite for embryo implantation in the uterus.
Sentence2: Embryo implantation is used in reproduction.

Output: implantation


Input:
Sentence1: Adult worms go through a major transformation to develop reproductive organs.
Sentence2: After about a week the larvae leave the nodules and continue to develop into adult worms.

Output: develop


Input:
Sentence1: Adult worms go through a major transformation to develop reproductive organs.
Sentence2: After about a week the larvae leave the nodules and continue to develop into adult worms.

Output: worms


Input:
Sentence1: an animal requires nutrients to grow and heal.
Sentence2: Food is the ideal source of nutrients.

Output: nutrients


Input:
Sentence1: crossing two living things with recessive traits causes their offspring to have that recessive trait.
Sentence2: Mutations cause various differences between the offspring and their parents.

Output: offspring


Input:
Sentence1: Touch is the ability to sense pressure.
Sentence2: Thread-like nerves sense pressure.

Output: pressure


Input:
Sentence1: Touch is the ability to sense pressure.
Sentence2: Thread-like nerves sense pressure.

Output: sense


Input:
Sentence1: An organic molecule is one involving carbon.
Sentence2: organic molecules cycle quickly between organisms and the atmosphere.

Output: molecule


Input:
Sentence1: An organic molecule is one involving carbon.
Sentence2: organic molecules cycle quickly between organisms and the atmosphere.

Output: organic


Input:
Sentence1: a wheeled vehicle requires smooth surfaces.
Sentence2: a wheeled vehicle requires less friction.

Output: requires


Input:
Sentence1: a wheeled vehicle requires smooth surfaces.
Sentence2: a wheeled vehicle requires less friction.

Output: vehicle


Input:
Sentence1: a wheeled vehicle requires smooth surfaces.
Sentence2: a wheeled vehicle requires less friction.

Output: wheeled


Input:
Sentence1: the looseness of soil has a positive impact on a plant 's roots' growth in that soil.
Sentence2: well-drained soil has a positive impact on a plant 's roots' growth in that soil.

Output: growth


Input:
Sentence1: the looseness of soil has a positive impact on a plant 's roots' growth in that soil.
Sentence2: well-drained soil has a positive impact on a plant 's roots' growth in that soil.

Output: has


Input:
Sentence1: the looseness of soil has a positive impact on a plant 's roots' growth in that soil.
Sentence2: well-drained soil has a positive impact on a plant 's roots' growth in that soil.

Output: impact


Input:
Sentence1: the looseness of soil has a positive impact on a plant 's roots' growth in that soil.
Sentence2: well-drained soil has a positive impact on a plant 's roots' growth in that soil.

Output: plant


Input:
Sentence1: the looseness of soil has a positive impact on a plant 's roots' growth in that soil.
Sentence2: well-drained soil has a positive impact on a plant 's roots' growth in that soil.

Output: positive


Input:
Sentence1: the looseness of soil has a positive impact on a plant 's roots' growth in that soil.
Sentence2: well-drained soil has a positive impact on a plant 's roots' growth in that soil.

Output: roots'


Input:
Sentence1: a mutation in the sex cells of a parent can cause a new trait to appear in the parent 's offspring.
Sentence2: Traits are initiated by mutation and recombination.

Output: mutation


Input:
Sentence1: Biomes are global ecosystems.
Sentence2: Wetlands are extremely important ecosystems.

Output: ecosystems


Input:
Sentence1: Insects can spread disease and destroy crops.
Sentence2: Major crops are corn, peanuts, soybeans and horticultural crops.

Output: crops


Input:
Sentence1: Human birth is the rarest of all births.
Sentence2: humans have a period of parental care of their offspring.

Output: Human


Input:
Sentence1: Alternation of generations allows for both asexual and sexual reproduction.
Sentence2: Alternation of generations allows for both vegetative and sexual reproduction.

Output: Alternation


Input:
Sentence1: Alternation of generations allows for both asexual and sexual reproduction.
Sentence2: Alternation of generations allows for both vegetative and sexual reproduction.

Output: allows


Input:
Sentence1: Alternation of generations allows for both asexual and sexual reproduction.
Sentence2: Alternation of generations allows for both vegetative and sexual reproduction.

Output: both


Input:
Sentence1: Alternation of generations allows for both asexual and sexual reproduction.
Sentence2: Alternation of generations allows for both vegetative and sexual reproduction.

Output: generations


Input:
Sentence1: Alternation of generations allows for both asexual and sexual reproduction.
Sentence2: Alternation of generations allows for both vegetative and sexual reproduction.

Output: reproduction


Input:
Sentence1: Alternation of generations allows for both asexual and sexual reproduction.
Sentence2: Alternation of generations allows for both vegetative and sexual reproduction.

Output: sexual


Input:
Sentence1: if an object is kicked then force is exerted on that object.
Sentence2: If an object is at rest, a force is needed to make it move.

Output: force


Input:
Sentence1: a radio converts electrical energy into vibrations.
Sentence2: electrical energy turns into vibrations.

Output: vibrations


Input:
Sentence1: Competition may lead to aggressive behaviors or displays of aggression.
Sentence2: Aggression is the drive, the adrenaline, the power.

Output: aggression


Input:
Sentence1: Mutualism is a symbiotic relationship in which both species benefit.
Sentence2: Lichens are a symbiotic association between a fungus and an alga.

Output: symbiotic


Input:
Sentence1: Corals form large colonies in shallow tropical water.
Sentence2: corals form large colonies in the warm, clear shallow waters.

Output: Corals


Input:
Sentence1: Corals form large colonies in shallow tropical water.
Sentence2: corals form large colonies in the warm, clear shallow waters.

Output: colonies


Input:
Sentence1: Corals form large colonies in shallow tropical water.
Sentence2: corals form large colonies in the warm, clear shallow waters.

Output: form


Input:
Sentence1: Corals form large colonies in shallow tropical water.
Sentence2: corals form large colonies in the warm, clear shallow waters.

Output: large


Input:
Sentence1: Insects may live in large colonies and have complex social behaviors.
Sentence2: Insects have six legs.

Output: Insects


Input:
Sentence1: Pollution One of the ways habitat is degraded is by pollution.
Sentence2: Riding a bike will not degrade habitat.

Output: degraded


Input:
Sentence1: Pollution One of the ways habitat is degraded is by pollution.
Sentence2: Riding a bike will not degrade habitat.

Output: habitat


Input:
Sentence1: loud noises can cause animals to startle.
Sentence2: Thunder is a rich source of loudness.

Output: loud


Input:
Sentence1: loud noises can cause animals to startle.
Sentence2: Thunder is a rich source of loudness.

Output: noises


Input:
Sentence1: Fungi lack chlorophyll, so they cannot make food by photosynthesis as plants can.
Sentence2: yeast lack clorophyll.

Output: chlorophyll


Input:
Sentence1: Organisms that live in marine biomes must be adapted to the salt in the water.
Sentence2: Estuaries display characteristics of both marine and freshwater biomes.

Output: biomes


Input:
Sentence1: Organisms that live in marine biomes must be adapted to the salt in the water.
Sentence2: Estuaries display characteristics of both marine and freshwater biomes.

Output: marine


Input:
Sentence1: being distracted while driving can cause people to crash their car.
Sentence2: being distracted while driving can cause people to die.

Output: being


Input:
Sentence1: being distracted while driving can cause people to crash their car.
Sentence2: being distracted while driving can cause people to die.

Output: distracted


Input:
Sentence1: being distracted while driving can cause people to crash their car.
Sentence2: being distracted while driving can cause people to die.

Output: driving


Input:
Sentence1: being distracted while driving can cause people to crash their car.
Sentence2: being distracted while driving can cause people to die.

Output: while


Input:
Sentence1: an animal requires nutrients for survival.
Sentence2: Proper digestion is vital for nutrient absorption.

Output: nutrients


Input:
Sentence1: braking can cause skidding.
Sentence2: Stopping the car quickly can cause skidding.

Output: cause


Input:
Sentence1: braking can cause skidding.
Sentence2: Stopping the car quickly can cause skidding.

Output: skidding


Input:
Sentence1: Urine is the liquid waste product of the body that is excreted by the urinary system.
Sentence2: The urinary system excretes a substance used in drug testing.

Output: excreted


Input:
Sentence1: Urine is the liquid waste product of the body that is excreted by the urinary system.
Sentence2: The urinary system excretes a substance used in drug testing.

Output: system


Input:
Sentence1: Urine is the liquid waste product of the body that is excreted by the urinary system.
Sentence2: The urinary system excretes a substance used in drug testing.

Output: urinary


Input:
Sentence1: Some parasites live on the surface of their host.
Sentence2: Survival is to live, to live means hope.

Output: live


Input:
Sentence1: animals require water for survival.
Sentence2: Hydrogen and oxygen create water.

Output: water


Input:
Sentence1: Scotland s lochs , including the famous Loch Ness, are glacial lakes.
Sentence2: Lochs are bigger and deeper than ponds.

Output: Loch


Input:
Sentence1: Scotland s lochs , including the famous Loch Ness, are glacial lakes.
Sentence2: Lochs are bigger and deeper than ponds.

Output: lochs


Input:
Sentence1: Fertilization is the penetration of the egg by a sperm.
Sentence2: The penetration of the egg by a sperm takes place inside the female organism.

Output: egg


Input:
Sentence1: Fertilization is the penetration of the egg by a sperm.
Sentence2: The penetration of the egg by a sperm takes place inside the female organism.

Output: penetration


Input:
Sentence1: Fertilization is the penetration of the egg by a sperm.
Sentence2: The penetration of the egg by a sperm takes place inside the female organism.

Output: sperm


Input:
Sentence1: Sepals The outermost whorl of modified leaves is called the sepals.
Sentence2: the outermost whorl of leaves camouflages the bud from possible consumers.

Output: leaves


Input:
Sentence1: Sepals The outermost whorl of modified leaves is called the sepals.
Sentence2: the outermost whorl of leaves camouflages the bud from possible consumers.

Output: outermost


Input:
Sentence1: Sepals The outermost whorl of modified leaves is called the sepals.
Sentence2: the outermost whorl of leaves camouflages the bud from possible consumers.

Output: whorl


Input:
Sentence1: Rainbows have colors because water refracts different wavelengths of light slightly differently.
Sentence2: Rainbows are formed from light hitting water and refracting different wavelengths.

Output: different


Input:
Sentence1: Rainbows have colors because water refracts different wavelengths of light slightly differently.
Sentence2: Rainbows are formed from light hitting water and refracting different wavelengths.

Output: water


Input:
Sentence1: Rainbows have colors because water refracts different wavelengths of light slightly differently.
Sentence2: Rainbows are formed from light hitting water and refracting different wavelengths.

Output: wavelengths


Input:
Sentence1: rocks interacting with wind over long periods of time causes weathering.
Sentence2: Rock weathering and erosion produces a continuous stream of sediments that are laid down in layers.

Output: weathering


Input:
Sentence1: Organs of excretion make up the excretory system.
Sentence2: Leptospiral organisms cause infection in the kidneys and are excreted in urine.

Output: excretion


Input:
Sentence1: All cells share some of the same structures and basic functions.
Sentence2: Cells are complex but all share basic functions.

Output: basic


Input:
Sentence1: All cells share some of the same structures and basic functions.
Sentence2: Cells are complex but all share basic functions.

Output: cells


Input:
Sentence1: All cells share some of the same structures and basic functions.
Sentence2: Cells are complex but all share basic functions.

Output: functions


Input:
Sentence1: Electrical energy is also energy.
Sentence2: Energy is used for heating buildings.

Output: energy


Input:
Sentence1: Flowers attract pollinators, and fruits encourage animals to disperse the seeds.
Sentence2: Poinsettia flowers can also be a problem.

Output: Flowers


Input:
Sentence1: an earthquake causes the ground to shake.
Sentence2: earthquakes can damage buildings.

Output: earthquake


Input:
Sentence1: soil is formed by rocks eroding.
Sentence2: Soil Erosion Soil erosion is a natural process.

Output: soil


Input:
Sentence1: a speedometer is used for giving a driver feedback on the speed of their vehicle.
Sentence2: Certainly, no driver wants to get a speeding ticket.

Output: speed


Input:
Sentence1: Viruses are not cells at all, so they are neither prokaryotes nor eukaryotes.
Sentence2: influenza is not a cell.

Output: cells


Input:
Sentence1: Viruses are not cells at all, so they are neither prokaryotes nor eukaryotes.
Sentence2: influenza is not a cell.

Output: not


Input:
Sentence1: Every season changes because the temperature changes with the seasons.
Sentence2: earth being tilted on a rotating axis cause temperature changes.

Output: changes


Input:
Sentence1: Every season changes because the temperature changes with the seasons.
Sentence2: earth being tilted on a rotating axis cause temperature changes.

Output: temperature


Input:
Sentence1: If the cooling is sufficient, water vapor condenses into clouds.
Sentence2: dew is formed when cooling  over night.

Output: cooling


Input:
Sentence1: Biological evolution is slow, while corporate evolution is fast.
Sentence2: The change in the characteristics of living things over time is slow.

Output: slow


Input:
Sentence1: Nerve impulses are electrical in nature.
Sentence2: Neurons are the brain cells that carry nerve impulses.

Output: Nerve


Input:
Sentence1: Nerve impulses are electrical in nature.
Sentence2: Neurons are the brain cells that carry nerve impulses.

Output: impulses


Input:
Sentence1: All pesticides that contain DDT are dangerous pesticides.
Sentence2: eating food that contains DDT can have a negative impact on humans.

Output: DDT


Input:
Sentence1: Ethologists are scientists who study animals in their natural habitats.
Sentence2: scientists study animals behavior.

Output: scientists


Input:
Sentence1: force causes the speed of an object to increase.
Sentence2: Speed is how fast an object is moving.

Output: speed


Input:
Sentence1: phase changes do not change mass.
Sentence2: phase changes do not change amount of matter.

Output: change


Input:
Sentence1: phase changes do not change mass.
Sentence2: phase changes do not change amount of matter.

Output: changes


Input:
Sentence1: phase changes do not change mass.
Sentence2: phase changes do not change amount of matter.

Output: do


Input:
Sentence1: phase changes do not change mass.
Sentence2: phase changes do not change amount of matter.

Output: not


Input:
Sentence1: phase changes do not change mass.
Sentence2: phase changes do not change amount of matter.

Output: phase


Input:
Sentence1: Global warming affects wildlife .
Sentence2: it affects wildlife when worldwide temperature increases.

Output: affects


Input:
Sentence1: Global warming affects wildlife .
Sentence2: it affects wildlife when worldwide temperature increases.

Output: wildlife


Input:
Sentence1: loud noises can cause animals to startle.
Sentence2: loud noises can cause mammals to startle.

Output: loud


Input:
Sentence1: loud noises can cause animals to startle.
Sentence2: loud noises can cause mammals to startle.

Output: noises


Input:
Sentence1: loud noises can cause animals to startle.
Sentence2: loud noises can cause mammals to startle.

Output: startle


Input:
Sentence1: Nitrogen is found in proteins, nucleic acids, and chlorophyll.
Sentence2: life without nitrogen is impossible.

Output: Nitrogen


Input:
Sentence1: Most modern gymnosperms are trees with woody trunks.
Sentence2: Conifers are examples of gymnosperms.

Output: gymnosperms


Input:
Sentence1: Insects have 2 antennae.
Sentence2: Insects have 2 appendages to detect sound.

Output: 2


Input:
Sentence1: Interestingly, a squid is also a mollusk.
Sentence2: squids have a circulatory system with one or two hearts that pump blood.

Output: squid


Input:
Sentence1: scraping oneself on a contaminated object may cause infection.
Sentence2: Any infection can cause death.

Output: infection


Input:
Sentence1: Some viruses have an envelope of phospholipids and proteins.
Sentence2: Some viruses are also enclosed by phospholipids fat and molecules.

Output: Some


Input:
Sentence1: Some viruses have an envelope of phospholipids and proteins.
Sentence2: Some viruses are also enclosed by phospholipids fat and molecules.

Output: phospholipids


Input:
Sentence1: Some viruses have an envelope of phospholipids and proteins.
Sentence2: Some viruses are also enclosed by phospholipids fat and molecules.

Output: viruses


Input:
Sentence1: Mutations are essential for evolution to occur.
Sentence2: Genes are altered for evolution to occur.

Output: evolution


Input:
Sentence1: Mutations are essential for evolution to occur.
Sentence2: Genes are altered for evolution to occur.

Output: occur


Input:
Sentence1: Bees are naturalized on every continent except Antarctica.
Sentence2: Climate of the Antarctica Region Antarctica is the coldest continent.

Output: Antarctica


Input:
Sentence1: Antibodies are large, Y-shaped proteins that recognize and bind to antigens.
Sentence2: Allergic reactions are caused by substances called antigens.

Output: antigens


Input:
Sentence1: sandpaper is used to smooth wooden objects.
Sentence2: sandpaper is used to smooth bats.

Output: sandpaper


Input:
Sentence1: sandpaper is used to smooth wooden objects.
Sentence2: sandpaper is used to smooth bats.

Output: smooth


Input:
Sentence1: sandpaper is used to smooth wooden objects.
Sentence2: sandpaper is used to smooth bats.

Output: used


Input:
Sentence1: Nitrogen deficiency increases the stress on the plants.
Sentence2: Bacteria prevents plant stress.

Output: stress


Input:
Sentence1: Earth 's tilt on its rotating axis causes seasons to change.
Sentence2: Earth's tilt on it's rotating axis causes rapid weather changes.

Output: Earth


Input:
Sentence1: Earth 's tilt on its rotating axis causes seasons to change.
Sentence2: Earth's tilt on it's rotating axis causes rapid weather changes.

Output: axis


Input:
Sentence1: Earth 's tilt on its rotating axis causes seasons to change.
Sentence2: Earth's tilt on it's rotating axis causes rapid weather changes.

Output: causes


Input:
Sentence1: Earth 's tilt on its rotating axis causes seasons to change.
Sentence2: Earth's tilt on it's rotating axis causes rapid weather changes.

Output: rotating


Input:
Sentence1: Earth 's tilt on its rotating axis causes seasons to change.
Sentence2: Earth's tilt on it's rotating axis causes rapid weather changes.

Output: tilt


Input:
Sentence1: chemical weathering causes iron in rock to oxidize.
Sentence2: chemical weathering causes redness of the rocks containing iron.

Output: causes


Input:
Sentence1: chemical weathering causes iron in rock to oxidize.
Sentence2: chemical weathering causes redness of the rocks containing iron.

Output: chemical


Input:
Sentence1: chemical weathering causes iron in rock to oxidize.
Sentence2: chemical weathering causes redness of the rocks containing iron.

Output: weathering


Input:
Sentence1: Secondary growth occurs in the lateral meristems.
Sentence2: the area where secondary growth  occurs is located within and around the vascular tissues.

Output: Secondary


Input:
Sentence1: Secondary growth occurs in the lateral meristems.
Sentence2: the area where secondary growth  occurs is located within and around the vascular tissues.

Output: growth


Input:
Sentence1: Secondary growth occurs in the lateral meristems.
Sentence2: the area where secondary growth  occurs is located within and around the vascular tissues.

Output: occurs


Input:
Sentence1: wiring requires an electrical conductor.
Sentence2: Wiring requires copper or gold.

Output: requires


Input:
Sentence1: wiring requires an electrical conductor.
Sentence2: Wiring requires copper or gold.

Output: wiring


Input:
Sentence1: temperature changing can cause phase changes.
Sentence2: Weather patterns can cause phase changes.

Output: can


Input:
Sentence1: temperature changing can cause phase changes.
Sentence2: Weather patterns can cause phase changes.

Output: cause


Input:
Sentence1: temperature changing can cause phase changes.
Sentence2: Weather patterns can cause phase changes.

Output: changes


Input:
Sentence1: temperature changing can cause phase changes.
Sentence2: Weather patterns can cause phase changes.

Output: phase


Input:
Sentence1: if a habitat can no longer support animals then those animals will move to another area.
Sentence2: Environmentalists say forest roads add to erosion, destroy habitat and affect animal migration.

Output: habitat


Input:
Sentence1: gases from burning coal and oil dissolving in water in the atmosphere causes acid rain.
Sentence2: Coal-fired plants Are power stations which burn coal to generate electricity.

Output: burning


Input:
Sentence1: gases from burning coal and oil dissolving in water in the atmosphere causes acid rain.
Sentence2: Coal-fired plants Are power stations which burn coal to generate electricity.

Output: coal


Input:
Sentence1: fanning a fire increases the oxygen near the fire.
Sentence2: On the other hand, air is the element that fans the flames of fire.

Output: fanning


Input:
Sentence1: Lake water visibly disturbed.
Sentence2: Dropping an object into lake causes vibrations.

Output: Lake


Input:
Sentence1: Most arthropods are insects.
Sentence2: Insects have jointed segmented exoskeletons.

Output: insects


Input:
Sentence1: Global warming causes ice storms.
Sentence2: Gases released during the use of fossil fuels cause ice storms.

Output: causes


Input:
Sentence1: Global warming causes ice storms.
Sentence2: Gases released during the use of fossil fuels cause ice storms.

Output: ice


Input:
Sentence1: Global warming causes ice storms.
Sentence2: Gases released during the use of fossil fuels cause ice storms.

Output: storms


Input:
Sentence1: coal is used for generating heat by burning.
Sentence2: When is coal burning CO 2 is given off.

Output: burning


Input:
Sentence1: coal is used for generating heat by burning.
Sentence2: When is coal burning CO 2 is given off.

Output: coal


Input:
Sentence1: satellites are used to take images from space.
Sentence2: Satellite imagery gives a global perspective on the ozone hole.

Output: satellites


Input:
Sentence1: microbial fuel cells convert chemical energy into electrical energy.
Sentence2: Computers run on electricity.

Output: electrical


Input:
Sentence1: high temperatures can cause an object to combust.
Sentence2: being near the sun can cause an object to combust.

Output: cause


Input:
Sentence1: high temperatures can cause an object to combust.
Sentence2: being near the sun can cause an object to combust.

Output: combust


Input:
Sentence1: high temperatures can cause an object to combust.
Sentence2: being near the sun can cause an object to combust.

Output: object


Input:
Sentence1: Water enters the body of the sponge through the osculum.
Sentence2: Sperm are released into the surrounding water through the sponge's body part.

Output: body


Input:
Sentence1: Water enters the body of the sponge through the osculum.
Sentence2: Sperm are released into the surrounding water through the sponge's body part.

Output: sponge


Input:
Sentence1: Mammals took advantage of the extinction of the dinosaurs.
Sentence2: Mammals took advantage of the extinction of giant lizards.

Output: Mammals


Input:
Sentence1: Mammals took advantage of the extinction of the dinosaurs.
Sentence2: Mammals took advantage of the extinction of giant lizards.

Output: advantage


Input:
Sentence1: Mammals took advantage of the extinction of the dinosaurs.
Sentence2: Mammals took advantage of the extinction of giant lizards.

Output: extinction


Input:
Sentence1: Mammals took advantage of the extinction of the dinosaurs.
Sentence2: Mammals took advantage of the extinction of giant lizards.

Output: took


Input:
Sentence1: Amphibians have sense organs to smell and taste chemicals.
Sentence2: Smell and taste belong to our chemical sensing system.

Output: smell


Input:
Sentence1: Amphibians have sense organs to smell and taste chemicals.
Sentence2: Smell and taste belong to our chemical sensing system.

Output: taste


Input:
Sentence1: Condoms can break; Condoms can be used incorrectly.
Sentence2: condoms used incorrectly can risk both pregnancy and infection.

Output: Condoms


Input:
Sentence1: Condoms can break; Condoms can be used incorrectly.
Sentence2: condoms used incorrectly can risk both pregnancy and infection.

Output: incorrectly


Input:
Sentence1: Condoms can break; Condoms can be used incorrectly.
Sentence2: condoms used incorrectly can risk both pregnancy and infection.

Output: used


Input:
Sentence1: The birds enthusiastically sought nectar.
Sentence2: Birds are pollinators.

Output: birds


Input:
Sentence1: sonar is used to find the location of an object.
Sentence2: Bats use echolocation which is like sonar.

Output: sonar


Input:
Sentence1: heating salt water causes the water to evaporate while the salt remains.
Sentence2: heating oceans causes the H2O to evaporate while the NaCl remains.

Output: causes


Input:
Sentence1: heating salt water causes the water to evaporate while the salt remains.
Sentence2: heating oceans causes the H2O to evaporate while the NaCl remains.

Output: evaporate


Input:
Sentence1: heating salt water causes the water to evaporate while the salt remains.
Sentence2: heating oceans causes the H2O to evaporate while the NaCl remains.

Output: heating


Input:
Sentence1: heating salt water causes the water to evaporate while the salt remains.
Sentence2: heating oceans causes the H2O to evaporate while the NaCl remains.

Output: remains


Input:
Sentence1: heating salt water causes the water to evaporate while the salt remains.
Sentence2: heating oceans causes the H2O to evaporate while the NaCl remains.

Output: salt


Input:
Sentence1: heating salt water causes the water to evaporate while the salt remains.
Sentence2: heating oceans causes the H2O to evaporate while the NaCl remains.

Output: water


Input:
Sentence1: loud noises can cause animals to startle.
Sentence2: Snorts often are emitted by startled animals S16801.

Output: startle


Input:
Sentence1: Invertebrates are animals that lack a vertebral column, or backbone.
Sentence2: Fish are aquatic animals that do not lack a vertebral column.

Output: column


Input:
Sentence1: Invertebrates are animals that lack a vertebral column, or backbone.
Sentence2: Fish are aquatic animals that do not lack a vertebral column.

Output: lack


Input:
Sentence1: Invertebrates are animals that lack a vertebral column, or backbone.
Sentence2: Fish are aquatic animals that do not lack a vertebral column.

Output: vertebral


Input:
Sentence1: being burried under soil and mud changes vegetation into peat through extreme heat and pressure in a swamp over a long period of time.
Sentence2: buried vegetation in a wetland changes to peat over a long period of time.

Output: burried


Input:
Sentence1: being burried under soil and mud changes vegetation into peat through extreme heat and pressure in a swamp over a long period of time.
Sentence2: buried vegetation in a wetland changes to peat over a long period of time.

Output: changes


Input:
Sentence1: being burried under soil and mud changes vegetation into peat through extreme heat and pressure in a swamp over a long period of time.
Sentence2: buried vegetation in a wetland changes to peat over a long period of time.

Output: long


Input:
Sentence1: being burried under soil and mud changes vegetation into peat through extreme heat and pressure in a swamp over a long period of time.
Sentence2: buried vegetation in a wetland changes to peat over a long period of time.

Output: peat


Input:
Sentence1: being burried under soil and mud changes vegetation into peat through extreme heat and pressure in a swamp over a long period of time.
Sentence2: buried vegetation in a wetland changes to peat over a long period of time.

Output: period


Input:
Sentence1: being burried under soil and mud changes vegetation into peat through extreme heat and pressure in a swamp over a long period of time.
Sentence2: buried vegetation in a wetland changes to peat over a long period of time.

Output: time


Input:
Sentence1: being burried under soil and mud changes vegetation into peat through extreme heat and pressure in a swamp over a long period of time.
Sentence2: buried vegetation in a wetland changes to peat over a long period of time.

Output: vegetation


Input:
Sentence1: Meteorologists try to predict the weather.
Sentence2: meteorologists use satellite technology.

Output: Meteorologists


Input:
Sentence1: a fire requires oxygen to burn.
Sentence2: Oxygen has  eight protons and eight electrons.

Output: oxygen


Input:
Sentence1: Frogs are neat, Frogs are cool.
Sentence2: tadpoles become neat and cool.

Output: cool


Input:
Sentence1: Frogs are neat, Frogs are cool.
Sentence2: tadpoles become neat and cool.

Output: neat


Input:
Sentence1: With a spatula, fold in flour mixture.
Sentence2: a sifter is used for separating flour.

Output: flour


Input:
Sentence1: pollutants have a negative impact on the environment.
Sentence2: Environment and Health Environment and Health All living things depend on their environment.

Output: environment


Input:
Sentence1: Jaws also make cartilaginous fish excellent predators.
Sentence2: some excellent predators  have jaws that have rows of teeth that grow throughout life.

Output: Jaws


Input:
Sentence1: Jaws also make cartilaginous fish excellent predators.
Sentence2: some excellent predators  have jaws that have rows of teeth that grow throughout life.

Output: excellent


Input:
Sentence1: Jaws also make cartilaginous fish excellent predators.
Sentence2: some excellent predators  have jaws that have rows of teeth that grow throughout life.

Output: predators


Input:
Sentence1: an anemometer is used to measure wind speed.
Sentence2: Wind speed is gauged with an anemometer.

Output: speed


Input:
Sentence1: sound can be used for communication by animals.
Sentence2: Many animals rely on sounds to communicate to others in their species.

Output: communication


Input:
Sentence1: the fallopian tubes are used in reproduction.
Sentence2: Gametes normally meet in the fallopian tube.

Output: fallopian


Input:
Sentence1: damming a river can cause a lake to form.
Sentence2: Damming a river results in stream blockages.

Output: a


Input:
Sentence1: damming a river can cause a lake to form.
Sentence2: Damming a river results in stream blockages.

Output: damming


Input:
Sentence1: damming a river can cause a lake to form.
Sentence2: Damming a river results in stream blockages.

Output: river


Input:
Sentence1: Speciation events are thus examples of macroevolution.
Sentence2: Speciation events occur over geologic time above the level of the species.

Output: Speciation


Input:
Sentence1: Speciation events are thus examples of macroevolution.
Sentence2: Speciation events occur over geologic time above the level of the species.

Output: events


Input:
Sentence1: Monotremes are mammals that reproduce by laying eggs.
Sentence2: Platypus are monotremes.

Output: Monotremes


Input:
Sentence1: Genetics is the study and application of principles of inheritance to plants and animals .
Sentence2: Pedigrees are useful tools for studying Genetics.

Output: Genetics


Input:
Sentence1: Arthropods are the largest group of animals.
Sentence2: The largest group of animals are insects.

Output: animals


Input:
Sentence1: Arthropods are the largest group of animals.
Sentence2: The largest group of animals are insects.

Output: group


Input:
Sentence1: Arthropods are the largest group of animals.
Sentence2: The largest group of animals are insects.

Output: largest


Input:
Sentence1: Arthropods are the largest group of animals.
Sentence2: The largest group of animals are insects.

Output: of


Input:
Sentence1: Arthropods are the largest group of animals.
Sentence2: The largest group of animals are insects.

Output: the


Input:
Sentence1: when a body of water receives more water than it can hold , a flood occurs.
Sentence2: The probability of receiving more water is based on the past.

Output: more


Input:
Sentence1: when a body of water receives more water than it can hold , a flood occurs.
Sentence2: The probability of receiving more water is based on the past.

Output: receives


Input:
Sentence1: when a body of water receives more water than it can hold , a flood occurs.
Sentence2: The probability of receiving more water is based on the past.

Output: water


Input:
Sentence1: gases from burning coal and oil dissolving in water in the atmosphere causes acid rain.
Sentence2: Acid rain is harmful rain.

Output: acid


Input:
Sentence1: gases from burning coal and oil dissolving in water in the atmosphere causes acid rain.
Sentence2: Acid rain is harmful rain.

Output: rain


Input:
Sentence1: Friction causes the decline of speed.
Sentence2: The decline of speed in associated with an object losing energy.

Output: decline


Input:
Sentence1: Friction causes the decline of speed.
Sentence2: The decline of speed in associated with an object losing energy.

Output: speed


Input:
Sentence1: Some viruses can cause cancer.
Sentence2: Some viruses can cause mutations.

Output: Some


Input:
Sentence1: Some viruses can cause cancer.
Sentence2: Some viruses can cause mutations.

Output: can


Input:
Sentence1: Some viruses can cause cancer.
Sentence2: Some viruses can cause mutations.

Output: cause


Input:
Sentence1: Some viruses can cause cancer.
Sentence2: Some viruses can cause mutations.

Output: viruses


Input:
Sentence1: An intense bright light produces a glare.
Sentence2: Nuclear reactions in stars cause stars to produce bright glares.

Output: bright


Input:
Sentence1: An intense bright light produces a glare.
Sentence2: Nuclear reactions in stars cause stars to produce bright glares.

Output: glare


Input:
Sentence1: An intense bright light produces a glare.
Sentence2: Nuclear reactions in stars cause stars to produce bright glares.

Output: produces


Input:
Sentence1: Deadly carbon monoxide gas from the generator s exhaust can spread throughout enclosed spaces.
Sentence2: carbon monoxide gas from a generator's exhaust has been evaporated.

Output: carbon


Input:
Sentence1: Deadly carbon monoxide gas from the generator s exhaust can spread throughout enclosed spaces.
Sentence2: carbon monoxide gas from a generator's exhaust has been evaporated.

Output: exhaust


Input:
Sentence1: Deadly carbon monoxide gas from the generator s exhaust can spread throughout enclosed spaces.
Sentence2: carbon monoxide gas from a generator's exhaust has been evaporated.

Output: generator


Input:
Sentence1: Deadly carbon monoxide gas from the generator s exhaust can spread throughout enclosed spaces.
Sentence2: carbon monoxide gas from a generator's exhaust has been evaporated.

Output: monoxide


Input:
Sentence1: scraping oneself on a contaminated object may cause infection.
Sentence2: An abscess is an infected area swollen with pus.

Output: infection


Input:
Sentence1: Kidney dialysis depletes carnitine.
Sentence2: Treating kidney failure  depletes carnitine.

Output: carnitine


Input:
Sentence1: Kidney dialysis depletes carnitine.
Sentence2: Treating kidney failure  depletes carnitine.

Output: depletes


Input:
Sentence1: Air pressure is a measure of the weight of the air.
Sentence2: A barometer is used to measure the weight of the air.

Output: air


Input:
Sentence1: Air pressure is a measure of the weight of the air.
Sentence2: A barometer is used to measure the weight of the air.

Output: weight


Input:
Sentence1: Plants use the direct light energy from the sun to grow.
Sentence2: Plants have more difficulty growing when a hemisphere is tilted away from the sun.

Output: grow


Input:
Sentence1: Plants use the direct light energy from the sun to grow.
Sentence2: Plants have more difficulty growing when a hemisphere is tilted away from the sun.

Output: sun


Input:
Sentence1: Whale sharks are viviparous , giving birth to live young.
Sentence2: Therian mammals give birth to live young, called live birth.

Output: birth


Input:
Sentence1: Whale sharks are viviparous , giving birth to live young.
Sentence2: Therian mammals give birth to live young, called live birth.

Output: live


Input:
Sentence1: Whale sharks are viviparous , giving birth to live young.
Sentence2: Therian mammals give birth to live young, called live birth.

Output: young


Input:
Sentence1: operating an automobile usually requires fossil fuels.
Sentence2: Operating an automobile requires oil and gasoline.

Output: an


Input:
Sentence1: operating an automobile usually requires fossil fuels.
Sentence2: Operating an automobile requires oil and gasoline.

Output: automobile


Input:
Sentence1: operating an automobile usually requires fossil fuels.
Sentence2: Operating an automobile requires oil and gasoline.

Output: operating


Input:
Sentence1: operating an automobile usually requires fossil fuels.
Sentence2: Operating an automobile requires oil and gasoline.

Output: requires


Input:
Sentence1: During winter, the earth in the Northern Hemisphere is tilted away from the sun.
Sentence2: Winter is caused from being tilted away from the sun and receiving less energy.

Output: away


Input:
Sentence1: During winter, the earth in the Northern Hemisphere is tilted away from the sun.
Sentence2: Winter is caused from being tilted away from the sun and receiving less energy.

Output: sun


Input:
Sentence1: During winter, the earth in the Northern Hemisphere is tilted away from the sun.
Sentence2: Winter is caused from being tilted away from the sun and receiving less energy.

Output: tilted


Input:
Sentence1: During winter, the earth in the Northern Hemisphere is tilted away from the sun.
Sentence2: Winter is caused from being tilted away from the sun and receiving less energy.

Output: winter


Input:
Sentence1: being exposed to wind can cause erosion of soil.
Sentence2: Wind erosion is slowed by wind barriers such as trees and shrubs.

Output: wind


Input:
Sentence1: Animals can communicate with sounds, chemicals, or visual cues.
Sentence2: Animals can communicate with energy.

Output: Animals


Input:
Sentence1: Animals can communicate with sounds, chemicals, or visual cues.
Sentence2: Animals can communicate with energy.

Output: communicate


Input:
Sentence1: Corals form large colonies in shallow tropical water.
Sentence2: Flower-like animals live in shallow tropical water.

Output: shallow


Input:
Sentence1: Corals form large colonies in shallow tropical water.
Sentence2: Flower-like animals live in shallow tropical water.

Output: tropical


Input:
Sentence1: Corals form large colonies in shallow tropical water.
Sentence2: Flower-like animals live in shallow tropical water.

Output: water


Input:
Sentence1: a seismometer is used to measure the strength or magnitude of an earthquake.
Sentence2: a seismometer can predict destruction.

Output: seismometer


Input:
Sentence1: Menopause occurs when menstruation stops occurring, usually in middle adulthood.
Sentence2: Menstruation begins in puberty and ends with menopause .

Output: menstruation


Input:
Sentence1: friction causes the speed of an object to decrease.
Sentence2: The texture of surfaces can cause the speed of an object to decrease.

Output: decrease


Input:
Sentence1: friction causes the speed of an object to decrease.
Sentence2: The texture of surfaces can cause the speed of an object to decrease.

Output: object


Input:
Sentence1: friction causes the speed of an object to decrease.
Sentence2: The texture of surfaces can cause the speed of an object to decrease.

Output: speed


Input:
Sentence1: Wound healing Wound healing is a critical aspect of surgery.
Sentence2: zinc has a positive impact after a surgery.

Output: surgery


Input:
Sentence1: microbial fuel cells convert chemical energy into electrical energy.
Sentence2: microbial fuel cells convert chemical energy into kinetic energy.

Output: cells


Input:
Sentence1: microbial fuel cells convert chemical energy into electrical energy.
Sentence2: microbial fuel cells convert chemical energy into kinetic energy.

Output: chemical


Input:
Sentence1: microbial fuel cells convert chemical energy into electrical energy.
Sentence2: microbial fuel cells convert chemical energy into kinetic energy.

Output: convert


Input:
Sentence1: microbial fuel cells convert chemical energy into electrical energy.
Sentence2: microbial fuel cells convert chemical energy into kinetic energy.

Output: energy


Input:
Sentence1: microbial fuel cells convert chemical energy into electrical energy.
Sentence2: microbial fuel cells convert chemical energy into kinetic energy.

Output: fuel


Input:
Sentence1: microbial fuel cells convert chemical energy into electrical energy.
Sentence2: microbial fuel cells convert chemical energy into kinetic energy.

Output: into


Input:
Sentence1: microbial fuel cells convert chemical energy into electrical energy.
Sentence2: microbial fuel cells convert chemical energy into kinetic energy.

Output: microbial


Input:
Sentence1: Lack of rain last winter has intensified Arizona's drought.
Sentence2: lack of rain can change the color of an environment from green to brown.

Output: Lack


Input:
Sentence1: Lack of rain last winter has intensified Arizona's drought.
Sentence2: lack of rain can change the color of an environment from green to brown.

Output: rain


Input:
Sentence1: threatening behavior causes a fight-or-flight response in animals.
Sentence2: fight-or-flight response happens in humans and animals.

Output: fight-or-flight


Input:
Sentence1: threatening behavior causes a fight-or-flight response in animals.
Sentence2: fight-or-flight response happens in humans and animals.

Output: response


Input:
Sentence1: Lymph is a fluid that leaks out of capillaries into spaces between cells.
Sentence2: Lymph is a liquid that leaks out of capillaries into spaces between cells.

Output: Lymph


Input:
Sentence1: Lymph is a fluid that leaks out of capillaries into spaces between cells.
Sentence2: Lymph is a liquid that leaks out of capillaries into spaces between cells.

Output: a


Input:
Sentence1: Lymph is a fluid that leaks out of capillaries into spaces between cells.
Sentence2: Lymph is a liquid that leaks out of capillaries into spaces between cells.

Output: between


Input:
Sentence1: Lymph is a fluid that leaks out of capillaries into spaces between cells.
Sentence2: Lymph is a liquid that leaks out of capillaries into spaces between cells.

Output: capillaries


Input:
Sentence1: Lymph is a fluid that leaks out of capillaries into spaces between cells.
Sentence2: Lymph is a liquid that leaks out of capillaries into spaces between cells.

Output: cells


Input:
Sentence1: Lymph is a fluid that leaks out of capillaries into spaces between cells.
Sentence2: Lymph is a liquid that leaks out of capillaries into spaces between cells.

Output: into


Input:
Sentence1: Lymph is a fluid that leaks out of capillaries into spaces between cells.
Sentence2: Lymph is a liquid that leaks out of capillaries into spaces between cells.

Output: is


Input:
Sentence1: Lymph is a fluid that leaks out of capillaries into spaces between cells.
Sentence2: Lymph is a liquid that leaks out of capillaries into spaces between cells.

Output: leaks


Input:
Sentence1: Lymph is a fluid that leaks out of capillaries into spaces between cells.
Sentence2: Lymph is a liquid that leaks out of capillaries into spaces between cells.

Output: of


Input:
Sentence1: Lymph is a fluid that leaks out of capillaries into spaces between cells.
Sentence2: Lymph is a liquid that leaks out of capillaries into spaces between cells.

Output: out


Input:
Sentence1: Lymph is a fluid that leaks out of capillaries into spaces between cells.
Sentence2: Lymph is a liquid that leaks out of capillaries into spaces between cells.

Output: spaces


Input:
Sentence1: Lymph is a fluid that leaks out of capillaries into spaces between cells.
Sentence2: Lymph is a liquid that leaks out of capillaries into spaces between cells.

Output: that


Input:
Sentence1: Differentiation is the process by which unspecialized cells become specialized.
Sentence2: Hair becomes specialized through differentiation.

Output: become


Input:
Sentence1: Differentiation is the process by which unspecialized cells become specialized.
Sentence2: Hair becomes specialized through differentiation.

Output: specialized


Input:
Sentence1: Inheritance patterns The commonest inheritance pattern is autosomal dominant.
Sentence2: Pedigrees are useful tools for studying autosomal dominant.

Output: autosomal


Input:
Sentence1: Inheritance patterns The commonest inheritance pattern is autosomal dominant.
Sentence2: Pedigrees are useful tools for studying autosomal dominant.

Output: dominant


Input:
Sentence1: Mammalian teeth are important for digestion.
Sentence2: bats' teeth are important for digestion.

Output: digestion


Input:
Sentence1: Mammalian teeth are important for digestion.
Sentence2: bats' teeth are important for digestion.

Output: important


Input:
Sentence1: Mammalian teeth are important for digestion.
Sentence2: bats' teeth are important for digestion.

Output: teeth


Input:
Sentence1: if a plant requires less water then that plant will survive in a drought.
Sentence2: Floods result from an overabundance of rainfall, droughts from a lack of rainfall.

Output: drought


Input:
Sentence1: Secondary meristem is located within and around the vascular tissues.
Sentence2: Secondary meristems develop after primary meristems.

Output: Secondary


Input:
Sentence1: cold fronts cause thunderstorms as they pass by.
Sentence2: Thunderstorms Thunderstorms give birth to tornadoes.

Output: thunderstorms


Input:
Sentence1: Some mountains are caused by erosion.
Sentence2: some mountains are caused by wind and rain.

Output: mountains


Input:
Sentence1: Producers are organisms that produce food for themselves and other organisms.
Sentence2: humans can provide food for other organisms.

Output: food


Input:
Sentence1: Producers are organisms that produce food for themselves and other organisms.
Sentence2: humans can provide food for other organisms.

Output: organisms


Input:
Sentence1: Producers are organisms that produce food for themselves and other organisms.
Sentence2: humans can provide food for other organisms.

Output: other


Input:
Sentence1: Each organism arises through reproduction-the production of offspring by one or more parents.
Sentence2: Fallopian tubes are used in the process of offspring production.

Output: offspring


Input:
Sentence1: Each organism arises through reproduction-the production of offspring by one or more parents.
Sentence2: Fallopian tubes are used in the process of offspring production.

Output: production


Input:
Sentence1: Light passes through the camera lens and hits a mirror.
Sentence2: Images are recorded by light passing through a lens and hitting a mirror.

Output: Light


Input:
Sentence1: Light passes through the camera lens and hits a mirror.
Sentence2: Images are recorded by light passing through a lens and hitting a mirror.

Output: hits


Input:
Sentence1: Light passes through the camera lens and hits a mirror.
Sentence2: Images are recorded by light passing through a lens and hitting a mirror.

Output: lens


Input:
Sentence1: Light passes through the camera lens and hits a mirror.
Sentence2: Images are recorded by light passing through a lens and hitting a mirror.

Output: mirror


Input:
Sentence1: Light passes through the camera lens and hits a mirror.
Sentence2: Images are recorded by light passing through a lens and hitting a mirror.

Output: passes


Input:
Sentence1: Light passes through the camera lens and hits a mirror.
Sentence2: Images are recorded by light passing through a lens and hitting a mirror.

Output: through


Input:
Sentence1: Bacteria and archaea are the only prokaryotes.
Sentence2: some prokaryotes are little known by scientists.

Output: prokaryotes


Input:
Sentence1: if a plant requires less water then that plant will survive in a drought.
Sentence2: Meteorological drought refers to dry conditions related to climate.

Output: drought


Input:
Sentence1: Prokaryotes are single-celled organisms that lack a nucleus.
Sentence2: Bacteria and archaebacteria are single-celled organisms that lack a nucleus.

Output: lack


Input:
Sentence1: Prokaryotes are single-celled organisms that lack a nucleus.
Sentence2: Bacteria and archaebacteria are single-celled organisms that lack a nucleus.

Output: nucleus


Input:
Sentence1: Prokaryotes are single-celled organisms that lack a nucleus.
Sentence2: Bacteria and archaebacteria are single-celled organisms that lack a nucleus.

Output: organisms


Input:
Sentence1: Prokaryotes are single-celled organisms that lack a nucleus.
Sentence2: Bacteria and archaebacteria are single-celled organisms that lack a nucleus.

Output: single-celled


Input:
Sentence1: Bile, produced by the liver, helps fat digestion and absorption.
Sentence2: the liver helps reduce acidity of food.

Output: liver


Input:
Sentence1: Humans have collected and grown mushrooms for food for thousands of years.
Sentence2: Humans have collected edible mushrooms for thousands of years.

Output: Humans


Input:
Sentence1: Humans have collected and grown mushrooms for food for thousands of years.
Sentence2: Humans have collected edible mushrooms for thousands of years.

Output: collected


Input:
Sentence1: Humans have collected and grown mushrooms for food for thousands of years.
Sentence2: Humans have collected edible mushrooms for thousands of years.

Output: thousands


Input:
Sentence1: Humans have collected and grown mushrooms for food for thousands of years.
Sentence2: Humans have collected edible mushrooms for thousands of years.

Output: years


Input:
Sentence1: Cnidarians have a hydrostatic skeleton.
Sentence2: Jellyfish have a hydrostatic skeleton.

Output: hydrostatic


Input:
Sentence1: Cnidarians have a hydrostatic skeleton.
Sentence2: Jellyfish have a hydrostatic skeleton.

Output: skeleton


Input:
Sentence1: Reptile parents provide little if any care to their young.
Sentence2: Alligators and crocodiles are the largest living reptiles.

Output: Reptile


Input:
Sentence1: Amphibians have a relatively complex circulatory system with a three-chambered heart.
Sentence2: frogs have a relatively complex circulatory system with a three-chambered heart.

Output: circulatory


Input:
Sentence1: Amphibians have a relatively complex circulatory system with a three-chambered heart.
Sentence2: frogs have a relatively complex circulatory system with a three-chambered heart.

Output: complex


Input:
Sentence1: Amphibians have a relatively complex circulatory system with a three-chambered heart.
Sentence2: frogs have a relatively complex circulatory system with a three-chambered heart.

Output: have


Input:
Sentence1: Amphibians have a relatively complex circulatory system with a three-chambered heart.
Sentence2: frogs have a relatively complex circulatory system with a three-chambered heart.

Output: heart


Input:
Sentence1: Amphibians have a relatively complex circulatory system with a three-chambered heart.
Sentence2: frogs have a relatively complex circulatory system with a three-chambered heart.

Output: relatively


Input:
Sentence1: Amphibians have a relatively complex circulatory system with a three-chambered heart.
Sentence2: frogs have a relatively complex circulatory system with a three-chambered heart.

Output: system


Input:
Sentence1: Amphibians have a relatively complex circulatory system with a three-chambered heart.
Sentence2: frogs have a relatively complex circulatory system with a three-chambered heart.

Output: three-chambered


Input:
Sentence1: Amphibians have a relatively complex circulatory system with a three-chambered heart.
Sentence2: frogs have a relatively complex circulatory system with a three-chambered heart.

Output: with


Input:
Sentence1: Menopause occurs when menstruation stops occurring, usually in middle adulthood.
Sentence2: Hot flashes can occur when menstruation stops occurring.

Output: menstruation


Input:
Sentence1: Menopause occurs when menstruation stops occurring, usually in middle adulthood.
Sentence2: Hot flashes can occur when menstruation stops occurring.

Output: occurring


Input:
Sentence1: Menopause occurs when menstruation stops occurring, usually in middle adulthood.
Sentence2: Hot flashes can occur when menstruation stops occurring.

Output: stops


Input:
Sentence1: if an object in a fluid is more dense than that fluid then that object will sink in that fluid because of gravity.
Sentence2: if an object in a fluid is more dense than that fluid then that object will sink in that fluid because of  Newton's law.

Output: dense


Input:
Sentence1: if an object in a fluid is more dense than that fluid then that object will sink in that fluid because of gravity.
Sentence2: if an object in a fluid is more dense than that fluid then that object will sink in that fluid because of  Newton's law.

Output: fluid


Input:
Sentence1: if an object in a fluid is more dense than that fluid then that object will sink in that fluid because of gravity.
Sentence2: if an object in a fluid is more dense than that fluid then that object will sink in that fluid because of  Newton's law.

Output: more


Input:
Sentence1: if an object in a fluid is more dense than that fluid then that object will sink in that fluid because of gravity.
Sentence2: if an object in a fluid is more dense than that fluid then that object will sink in that fluid because of  Newton's law.

Output: object


Input:
Sentence1: if an object in a fluid is more dense than that fluid then that object will sink in that fluid because of gravity.
Sentence2: if an object in a fluid is more dense than that fluid then that object will sink in that fluid because of  Newton's law.

Output: sink


Input:
Sentence1: Lymph is a fluid that leaks out of capillaries into spaces between cells.
Sentence2: Bacteria invade lymph nodes, which swell, creating the buboes.

Output: Lymph


Input:
Sentence1: biofuel is used to produce electricity by burning.
Sentence2: Green plants can be used to produce electricity by burning.

Output: burning


Input:
Sentence1: biofuel is used to produce electricity by burning.
Sentence2: Green plants can be used to produce electricity by burning.

Output: electricity


Input:
Sentence1: biofuel is used to produce electricity by burning.
Sentence2: Green plants can be used to produce electricity by burning.

Output: produce


Input:
Sentence1: Female gametophytes produce eggs inside the ovaries of flowers.
Sentence2: Fruits develop from the ovary of the flower.

Output: ovaries


Input:
Sentence1: Composting is simply the natural decomposition of organic matter.
Sentence2: Composting increases the amount of organic matter in soil.

Output: Composting


Input:
Sentence1: weathering means breaking down rocks from larger whole into smaller pieces by weather.
Sentence2: Weathering means eroding rocks down into smaller pieces of minerals.

Output: down


Input:
Sentence1: weathering means breaking down rocks from larger whole into smaller pieces by weather.
Sentence2: Weathering means eroding rocks down into smaller pieces of minerals.

Output: means


Input:
Sentence1: weathering means breaking down rocks from larger whole into smaller pieces by weather.
Sentence2: Weathering means eroding rocks down into smaller pieces of minerals.

Output: rocks


Input:
Sentence1: weathering means breaking down rocks from larger whole into smaller pieces by weather.
Sentence2: Weathering means eroding rocks down into smaller pieces of minerals.

Output: weathering


Input:
Sentence1: Some arthropods have special excretory structures.
Sentence2: All insects are arthropods.

Output: arthropods


Input:
Sentence1: the moon revolving around the Earth causes the phases of the moon.
Sentence2: Phases of the Moon are caused by differing amounts of light reflected from the Earth.

Output: phases


Input:
Sentence1: Advantages and disadvantages of sexual as opposed to asexual means of reproduction.
Sentence2: Alternation of generations allows for using the most advantageous type of reproduction.

Output: Advantages


Input:
Sentence1: plasma is formed by electrons separating from atoms in stars.
Sentence2: plasma ionizes metal.

Output: plasma


Input:
Sentence1: dehydrating food is used for preserving food.
Sentence2: Salting food preserves it.

Output: preserving


Input:
Sentence1: being burried under soil and mud changes vegetation into peat through extreme heat and pressure in a swamp over a long period of time.
Sentence2: Peat moss from bogs is also useful in gardens and as an alternative fuel source.

Output: peat


Input:
Sentence1: treating water is used to remove harmful substances before drinking.
Sentence2: Ordinary tap water can be full of harmful substances like chlorine, pesticides and heavy metals.

Output: harmful


Input:
Sentence1: treating water is used to remove harmful substances before drinking.
Sentence2: Ordinary tap water can be full of harmful substances like chlorine, pesticides and heavy metals.

Output: substances


Input:
Sentence1: Passive immunity lasts only as long as the antibodies survive in body fluids.
Sentence2: Passive immunity lasts only as long as the antibodies survive in fluid contaminated with blood.

Output: Passive


Input:
Sentence1: Passive immunity lasts only as long as the antibodies survive in body fluids.
Sentence2: Passive immunity lasts only as long as the antibodies survive in fluid contaminated with blood.

Output: antibodies


Input:
Sentence1: Passive immunity lasts only as long as the antibodies survive in body fluids.
Sentence2: Passive immunity lasts only as long as the antibodies survive in fluid contaminated with blood.

Output: immunity


Input:
Sentence1: Passive immunity lasts only as long as the antibodies survive in body fluids.
Sentence2: Passive immunity lasts only as long as the antibodies survive in fluid contaminated with blood.

Output: lasts


Input:
Sentence1: Passive immunity lasts only as long as the antibodies survive in body fluids.
Sentence2: Passive immunity lasts only as long as the antibodies survive in fluid contaminated with blood.

Output: long


Input:
Sentence1: Passive immunity lasts only as long as the antibodies survive in body fluids.
Sentence2: Passive immunity lasts only as long as the antibodies survive in fluid contaminated with blood.

Output: only


Input:
Sentence1: Passive immunity lasts only as long as the antibodies survive in body fluids.
Sentence2: Passive immunity lasts only as long as the antibodies survive in fluid contaminated with blood.

Output: survive


Input:
Sentence1: Mollusks are the dominant invertebrate.
Sentence2: the dominant invertebrate reproduces sexually.

Output: dominant


Input:
Sentence1: Mollusks are the dominant invertebrate.
Sentence2: the dominant invertebrate reproduces sexually.

Output: invertebrate


Input:
Sentence1: Small prey, like a mouse or vole, is carried back to a feeding perch where it is swallowed whole.
Sentence2: Some birds catch mice using their beak.

Output: mouse


Input:
Sentence1: information in an organism 's chromosomes cause genetic traits to be passed down to that organism 's offspring.
Sentence2: Intelligence is primarily a genetically inherited trait.

Output: genetic


Input:
Sentence1: information in an organism 's chromosomes cause genetic traits to be passed down to that organism 's offspring.
Sentence2: Intelligence is primarily a genetically inherited trait.

Output: traits


Input:
Sentence1: All animals rely on senses of taste and smell to find acceptable food for survival.
Sentence2: Taste and smell have a positive impact on  an animal's survival.

Output: animals


Input:
Sentence1: All animals rely on senses of taste and smell to find acceptable food for survival.
Sentence2: Taste and smell have a positive impact on  an animal's survival.

Output: smell


Input:
Sentence1: All animals rely on senses of taste and smell to find acceptable food for survival.
Sentence2: Taste and smell have a positive impact on  an animal's survival.

Output: taste


Input:
Sentence1: Bone is less flexible than cartilage but stronger.
Sentence2: Cartilage is more flexible and lighter in weight than bone.

Output: flexible


Input:
Sentence1: when metal conducts heat , that metal expands.
Sentence2: metal contracts when it cools.

Output: metal


Input:
Sentence1: Food is easier to chew because it is moistened by saliva from the salivary glands.
Sentence2: Food is easier to chew because it is moistened by liquid.

Output: Food


Input:
Sentence1: Food is easier to chew because it is moistened by saliva from the salivary glands.
Sentence2: Food is easier to chew because it is moistened by liquid.

Output: because


Input:
Sentence1: Food is easier to chew because it is moistened by saliva from the salivary glands.
Sentence2: Food is easier to chew because it is moistened by liquid.

Output: chew


Input:
Sentence1: Food is easier to chew because it is moistened by saliva from the salivary glands.
Sentence2: Food is easier to chew because it is moistened by liquid.

Output: easier


Input:
Sentence1: Food is easier to chew because it is moistened by saliva from the salivary glands.
Sentence2: Food is easier to chew because it is moistened by liquid.

Output: moistened


Input:
Sentence1: Eggs are loaded with vitamins and minerals.
Sentence2: eggs contain chemical elements that are essential for body processes.

Output: Eggs


Input:
Sentence1: Another symbolic object is the badge on the hat of Dinteville.
Sentence2: if two balanced forces act on an badge in opposite directions then that badge will remain stationary.

Output: badge


Input:
Sentence1: a telescope is used for observing stars by astronomers.
Sentence2: Telescopes A telescope needs at least two lenses.

Output: telescope


Input:
Sentence1: Intelligence is primarily a genetically inherited trait.
Sentence2: Intelligence is primarily encoded in DNA.

Output: Intelligence


Input:
Sentence1: Intelligence is primarily a genetically inherited trait.
Sentence2: Intelligence is primarily encoded in DNA.

Output: primarily


Input:
Sentence1: Individuals of a species normally mate and produce fertile offspring in the wild e.
Sentence2: Communities consist of populations of different groups that produce fertile offspring.

Output: fertile


Input:
Sentence1: Individuals of a species normally mate and produce fertile offspring in the wild e.
Sentence2: Communities consist of populations of different groups that produce fertile offspring.

Output: offspring


Input:
Sentence1: Individuals of a species normally mate and produce fertile offspring in the wild e.
Sentence2: Communities consist of populations of different groups that produce fertile offspring.

Output: produce


Input:
Sentence1: a plant requires water to grow.
Sentence2: Water carries the nutrients to the plants.

Output: water


Input:
Sentence1: Animals may compete for territory, water, food, or mates.
Sentence2: cats may compete for territory, water, food, or mates.

Output: compete


Input:
Sentence1: Animals may compete for territory, water, food, or mates.
Sentence2: cats may compete for territory, water, food, or mates.

Output: food


Input:
Sentence1: Animals may compete for territory, water, food, or mates.
Sentence2: cats may compete for territory, water, food, or mates.

Output: mates


Input:
Sentence1: Animals may compete for territory, water, food, or mates.
Sentence2: cats may compete for territory, water, food, or mates.

Output: territory


Input:
Sentence1: Animals may compete for territory, water, food, or mates.
Sentence2: cats may compete for territory, water, food, or mates.

Output: water


Input:
Sentence1: the fallopian tubes are used in reproduction.
Sentence2: the fallopian tubes are used production of offspring.

Output: fallopian


Input:
Sentence1: the fallopian tubes are used in reproduction.
Sentence2: the fallopian tubes are used production of offspring.

Output: tubes


Input:
Sentence1: the fallopian tubes are used in reproduction.
Sentence2: the fallopian tubes are used production of offspring.

Output: used


Input:
Sentence1: Ribosomes are assembled inside the nucleus.
Sentence2: Transcription takes place in the place where ribosomes are assembled.

Output: Ribosomes


Input:
Sentence1: a graduated cylinder is used to measure volume of a liquid.
Sentence2: Water is also a liquid.

Output: liquid


Input:
Sentence1: preventing the transfer of heat from an organims 's body causes that organism to keep warm.
Sentence2: Preventing the transfer of energy from an organism's body keeps it warm.

Output: 's


Input:
Sentence1: preventing the transfer of heat from an organims 's body causes that organism to keep warm.
Sentence2: Preventing the transfer of energy from an organism's body keeps it warm.

Output: an


Input:
Sentence1: preventing the transfer of heat from an organims 's body causes that organism to keep warm.
Sentence2: Preventing the transfer of energy from an organism's body keeps it warm.

Output: body


Input:
Sentence1: preventing the transfer of heat from an organims 's body causes that organism to keep warm.
Sentence2: Preventing the transfer of energy from an organism's body keeps it warm.

Output: from


Input:
Sentence1: preventing the transfer of heat from an organims 's body causes that organism to keep warm.
Sentence2: Preventing the transfer of energy from an organism's body keeps it warm.

Output: keep


Input:
Sentence1: preventing the transfer of heat from an organims 's body causes that organism to keep warm.
Sentence2: Preventing the transfer of energy from an organism's body keeps it warm.

Output: of


Input:
Sentence1: preventing the transfer of heat from an organims 's body causes that organism to keep warm.
Sentence2: Preventing the transfer of energy from an organism's body keeps it warm.

Output: organims


Input:
Sentence1: preventing the transfer of heat from an organims 's body causes that organism to keep warm.
Sentence2: Preventing the transfer of energy from an organism's body keeps it warm.

Output: preventing


Input:
Sentence1: preventing the transfer of heat from an organims 's body causes that organism to keep warm.
Sentence2: Preventing the transfer of energy from an organism's body keeps it warm.

Output: the


Input:
Sentence1: preventing the transfer of heat from an organims 's body causes that organism to keep warm.
Sentence2: Preventing the transfer of energy from an organism's body keeps it warm.

Output: transfer


Input:
Sentence1: preventing the transfer of heat from an organims 's body causes that organism to keep warm.
Sentence2: Preventing the transfer of energy from an organism's body keeps it warm.

Output: warm


Input:
Sentence1: During windy weather, the pollution is dispersed and cleared away.
Sentence2: high pressure systems cause pollution to disperse.

Output: dispersed


Input:
Sentence1: During windy weather, the pollution is dispersed and cleared away.
Sentence2: high pressure systems cause pollution to disperse.

Output: pollution


Input:
Sentence1: Hair helps to insulate and protect the body.
Sentence2: Hair grows from hair follicles within the skin.

Output: Hair


Input:
Sentence1: fluoride decreases tooth decay.
Sentence2: Tooth decay is a destruction of the tooth enamel.

Output: decay


Input:
Sentence1: fluoride decreases tooth decay.
Sentence2: Tooth decay is a destruction of the tooth enamel.

Output: tooth


Input:
Sentence1: protein is used to repair cells by the human body.
Sentence2: Wound healing requires protein.

Output: protein


Input:
Sentence1: Reptile parents provide little if any care to their young.
Sentence2: iguana parents provide little care to their young.

Output: care


Input:
Sentence1: Reptile parents provide little if any care to their young.
Sentence2: iguana parents provide little care to their young.

Output: little


Input:
Sentence1: Reptile parents provide little if any care to their young.
Sentence2: iguana parents provide little care to their young.

Output: parents


Input:
Sentence1: Reptile parents provide little if any care to their young.
Sentence2: iguana parents provide little care to their young.

Output: provide


Input:
Sentence1: Reptile parents provide little if any care to their young.
Sentence2: iguana parents provide little care to their young.

Output: their


Input:
Sentence1: Reptile parents provide little if any care to their young.
Sentence2: iguana parents provide little care to their young.

Output: young


Input:
Sentence1: forming coal requires decaying vegetation.
Sentence2: Forming fossil fuels requires decaying vegetation.

Output: decaying


Input:
Sentence1: forming coal requires decaying vegetation.
Sentence2: Forming fossil fuels requires decaying vegetation.

Output: forming


Input:
Sentence1: forming coal requires decaying vegetation.
Sentence2: Forming fossil fuels requires decaying vegetation.

Output: requires


Input:
Sentence1: forming coal requires decaying vegetation.
Sentence2: Forming fossil fuels requires decaying vegetation.

Output: vegetation


Input:
Sentence1: gravity causes objects that have mass to be pulled down on a planet.
Sentence2: Another name for Mars is the Red Planet.

Output: planet


Input:
Sentence1: Exercise causes muscles to contract.
Sentence2: exercise causes muscle fibers to get shorter.

Output: Exercise


Input:
Sentence1: Melting is a phase change.
Sentence2: A phase change changes a solid into a liquid using heat energy.

Output: change


Input:
Sentence1: Melting is a phase change.
Sentence2: A phase change changes a solid into a liquid using heat energy.

Output: phase


Input:
Sentence1: Lung cancer is most often caused by exposure to tobacco smoke.
Sentence2: tobacco smoke is very deadly.

Output: smoke


Input:
Sentence1: Lung cancer is most often caused by exposure to tobacco smoke.
Sentence2: tobacco smoke is very deadly.

Output: tobacco


Input:
Sentence1: Osteoclasts are specialized cells known to play a key role in bone resorption and bone remodeling.
Sentence2: Healing of fractures requires cells specialized in bone remodeling.

Output: bone


Input:
Sentence1: Osteoclasts are specialized cells known to play a key role in bone resorption and bone remodeling.
Sentence2: Healing of fractures requires cells specialized in bone remodeling.

Output: cells


Input:
Sentence1: Osteoclasts are specialized cells known to play a key role in bone resorption and bone remodeling.
Sentence2: Healing of fractures requires cells specialized in bone remodeling.

Output: remodeling


Input:
Sentence1: Osteoclasts are specialized cells known to play a key role in bone resorption and bone remodeling.
Sentence2: Healing of fractures requires cells specialized in bone remodeling.

Output: specialized


Input:
Sentence1: Food consists of organic molecules that store energy in their chemical bonds.
Sentence2: nutrients are molecules.

Output: molecules


Input:
Sentence1: Competition Animals compete for food and shelter.
Sentence2: Animals will fight their own species over food and shelter.

Output: food


Input:
Sentence1: Competition Animals compete for food and shelter.
Sentence2: Animals will fight their own species over food and shelter.

Output: shelter


Input:
Sentence1: Oaks are the most commonly attacked plants.
Sentence2: Ground tissue makes up most of the interior of an oak.

Output: Oaks


Input:
Sentence1: Caecilians are amphibians that move just like earthworms.
Sentence2: amphibians can be found in moist soil near rivers and streams in tropical regions.

Output: amphibians


Input:
Sentence1: Methods and processes are activities.
Sentence2: Differentiation is the method by which unspecialized cells become specialized.

Output: Methods


Input:
Sentence1: Mushrooms are also fungi.
Sentence2: mushrooms lack chlorophyll, so they cannot make food by photosynthesis as plants can.

Output: Mushrooms


Input:
Sentence1: Eggs are usually laid in a nest.
Sentence2: birds have nests.

Output: nest


Input:
Sentence1: Roundworms make up the phylum Nematoda.
Sentence2: Also, nematoda and rotifera are important groups contributing to soils.

Output: Nematoda


Input:
Sentence1: Each archegonium contains a single egg that is embedded in the prothallus.
Sentence2: fertilization occurs when sperm swim inside a single egg embedded in the prothallus.

Output: egg


Input:
Sentence1: Each archegonium contains a single egg that is embedded in the prothallus.
Sentence2: fertilization occurs when sperm swim inside a single egg embedded in the prothallus.

Output: embedded


Input:
Sentence1: Each archegonium contains a single egg that is embedded in the prothallus.
Sentence2: fertilization occurs when sperm swim inside a single egg embedded in the prothallus.

Output: prothallus


Input:
Sentence1: Each archegonium contains a single egg that is embedded in the prothallus.
Sentence2: fertilization occurs when sperm swim inside a single egg embedded in the prothallus.

Output: single


Input:
Sentence1: Water vapor in the atmosphere condenses, then falls to the earth's surface as rain and snow.
Sentence2: Transpiration is when water vapor moves from plants and falls to the earth's surface as rain and snow.

Output: earth's


Input:
Sentence1: Water vapor in the atmosphere condenses, then falls to the earth's surface as rain and snow.
Sentence2: Transpiration is when water vapor moves from plants and falls to the earth's surface as rain and snow.

Output: falls


Input:
Sentence1: Water vapor in the atmosphere condenses, then falls to the earth's surface as rain and snow.
Sentence2: Transpiration is when water vapor moves from plants and falls to the earth's surface as rain and snow.

Output: rain


Input:
Sentence1: Water vapor in the atmosphere condenses, then falls to the earth's surface as rain and snow.
Sentence2: Transpiration is when water vapor moves from plants and falls to the earth's surface as rain and snow.

Output: snow


Input:
Sentence1: Water vapor in the atmosphere condenses, then falls to the earth's surface as rain and snow.
Sentence2: Transpiration is when water vapor moves from plants and falls to the earth's surface as rain and snow.

Output: surface


Input:
Sentence1: Animals can communicate with sounds, chemicals, or visual cues.
Sentence2: cows can communicate with sounds, chemicals or visual cues.

Output: chemicals


Input:
Sentence1: Animals can communicate with sounds, chemicals, or visual cues.
Sentence2: cows can communicate with sounds, chemicals or visual cues.

Output: communicate


Input:
Sentence1: Animals can communicate with sounds, chemicals, or visual cues.
Sentence2: cows can communicate with sounds, chemicals or visual cues.

Output: cues


Input:
Sentence1: Animals can communicate with sounds, chemicals, or visual cues.
Sentence2: cows can communicate with sounds, chemicals or visual cues.

Output: sounds


Input:
Sentence1: Animals can communicate with sounds, chemicals, or visual cues.
Sentence2: cows can communicate with sounds, chemicals or visual cues.

Output: visual


Input:
Sentence1: a radio is used for communication.
Sentence2: Electromagnetic waves are used for communication.

Output: communication


Input:
Sentence1: thick fur can be used for keeping warm.
Sentence2: Becuse of that, the fat layer was needed to keep warm, now that the fur coat was removed.

Output: warm


Input:
Sentence1: Some of the best work in ecology has been done on small fresh water pond ecosystems.
Sentence2: Lakes are generally bigger and deeper than small fresh water ecosystems.

Output: ecosystems


Input:
Sentence1: Some of the best work in ecology has been done on small fresh water pond ecosystems.
Sentence2: Lakes are generally bigger and deeper than small fresh water ecosystems.

Output: fresh


Input:
Sentence1: Some of the best work in ecology has been done on small fresh water pond ecosystems.
Sentence2: Lakes are generally bigger and deeper than small fresh water ecosystems.

Output: small


Input:
Sentence1: Some of the best work in ecology has been done on small fresh water pond ecosystems.
Sentence2: Lakes are generally bigger and deeper than small fresh water ecosystems.

Output: water


Input:
Sentence1: Gasoline is made up of hydrocarbons.
Sentence2: A car engine converts a fuel of hydrocarbons into motion through combustion.

Output: hydrocarbons


Input:
Sentence1: if a thermal conductor is exposed to a source of heat then that conductor may become hot.
Sentence2: if copper is exposed to heat, it may become hot.

Output: become


Input:
Sentence1: if a thermal conductor is exposed to a source of heat then that conductor may become hot.
Sentence2: if copper is exposed to heat, it may become hot.

Output: exposed


Input:
Sentence1: if a thermal conductor is exposed to a source of heat then that conductor may become hot.
Sentence2: if copper is exposed to heat, it may become hot.

Output: heat


Input:
Sentence1: if a thermal conductor is exposed to a source of heat then that conductor may become hot.
Sentence2: if copper is exposed to heat, it may become hot.

Output: hot


Input:
Sentence1: high pressure systems cause clear weather.
Sentence2: high pressure systems allow sailplane to fly.

Output: high


Input:
Sentence1: high pressure systems cause clear weather.
Sentence2: high pressure systems allow sailplane to fly.

Output: pressure


Input:
Sentence1: high pressure systems cause clear weather.
Sentence2: high pressure systems allow sailplane to fly.

Output: systems


Input:
Sentence1: Science is the study of the natural world through experience and experiment.
Sentence2: science is often done in a lab.

Output: Science


Input:
Sentence1: coal is used to produce electricity by burning in coal-fire power stations.
Sentence2: coal is a bargain.

Output: coal


Input:
Sentence1: Electrical energy is also energy.
Sentence2: wind is used for producing energy.

Output: energy


Input:
Sentence1: a long tail can be used to move through water by an animal.
Sentence2: Salamanders can move through water.

Output: can


Input:
Sentence1: a long tail can be used to move through water by an animal.
Sentence2: Salamanders can move through water.

Output: move


Input:
Sentence1: a long tail can be used to move through water by an animal.
Sentence2: Salamanders can move through water.

Output: through


Input:
Sentence1: a long tail can be used to move through water by an animal.
Sentence2: Salamanders can move through water.

Output: water


Input:
Sentence1: cycles of freezing and thawing water cause ice wedging.
Sentence2: cycles of freezing and thawing water cause mechanical weathering.

Output: cause


Input:
Sentence1: cycles of freezing and thawing water cause ice wedging.
Sentence2: cycles of freezing and thawing water cause mechanical weathering.

Output: cycles


Input:
Sentence1: cycles of freezing and thawing water cause ice wedging.
Sentence2: cycles of freezing and thawing water cause mechanical weathering.

Output: freezing


Input:
Sentence1: cycles of freezing and thawing water cause ice wedging.
Sentence2: cycles of freezing and thawing water cause mechanical weathering.

Output: thawing


Input:
Sentence1: cycles of freezing and thawing water cause ice wedging.
Sentence2: cycles of freezing and thawing water cause mechanical weathering.

Output: water


Input:
Sentence1: White eye color is a recessive trait.
Sentence2: crossing two living things with white eye color causes their offspring to have white eye color.

Output: White


Input:
Sentence1: White eye color is a recessive trait.
Sentence2: crossing two living things with white eye color causes their offspring to have white eye color.

Output: color


Input:
Sentence1: White eye color is a recessive trait.
Sentence2: crossing two living things with white eye color causes their offspring to have white eye color.

Output: eye


Input:
Sentence1: keeping food cold is used for keeping food fresh.
Sentence2: Keep your food fresh, simple and as natural as possible.

Output: fresh


Input:
Sentence1: Producers make food from inorganic molecules.
Sentence2: The lowest trophic level makes food from inorganic molecules.

Output: food


Input:
Sentence1: Producers make food from inorganic molecules.
Sentence2: The lowest trophic level makes food from inorganic molecules.

Output: inorganic


Input:
Sentence1: Producers make food from inorganic molecules.
Sentence2: The lowest trophic level makes food from inorganic molecules.

Output: make


Input:
Sentence1: Producers make food from inorganic molecules.
Sentence2: The lowest trophic level makes food from inorganic molecules.

Output: molecules


Input:
Sentence1: Babies that are very large or very small at birth are less likely to survive.
Sentence2: Babies with microsomia are less likely to survive.

Output: are


Input:
Sentence1: Babies that are very large or very small at birth are less likely to survive.
Sentence2: Babies with microsomia are less likely to survive.

Output: less


Input:
Sentence1: Babies that are very large or very small at birth are less likely to survive.
Sentence2: Babies with microsomia are less likely to survive.

Output: likely


Input:
Sentence1: Babies that are very large or very small at birth are less likely to survive.
Sentence2: Babies with microsomia are less likely to survive.

Output: survive


Input:
Sentence1: Precipitation increases moisture.
Sentence2: All precipitation amounts are in inches.

Output: Precipitation


Input:
Sentence1: hiding can be used for avoiding predators.
Sentence2: hiding can be used by animals like young birds.

Output: hiding


Input:
Sentence1: hiding can be used for avoiding predators.
Sentence2: hiding can be used by animals like young birds.

Output: used


Input:
Sentence1: Hair is used to insulate and keep the body warm in a large variety of climates.
Sentence2: Hair helps to keep the body warm and protect it in a variety of climates.

Output: body


Input:
Sentence1: Hair is used to insulate and keep the body warm in a large variety of climates.
Sentence2: Hair helps to keep the body warm and protect it in a variety of climates.

Output: climates


Input:
Sentence1: Hair is used to insulate and keep the body warm in a large variety of climates.
Sentence2: Hair helps to keep the body warm and protect it in a variety of climates.

Output: keep


Input:
Sentence1: Hair is used to insulate and keep the body warm in a large variety of climates.
Sentence2: Hair helps to keep the body warm and protect it in a variety of climates.

Output: variety


Input:
Sentence1: Hair is used to insulate and keep the body warm in a large variety of climates.
Sentence2: Hair helps to keep the body warm and protect it in a variety of climates.

Output: warm


Input:
Sentence1: Running water is better able to dissolve oxygen and nutrients than standing water.
Sentence2: Rivers can better dissolve oxygen and nutrients than lakes.

Output: dissolve


Input:
Sentence1: Running water is better able to dissolve oxygen and nutrients than standing water.
Sentence2: Rivers can better dissolve oxygen and nutrients than lakes.

Output: nutrients


Input:
Sentence1: Running water is better able to dissolve oxygen and nutrients than standing water.
Sentence2: Rivers can better dissolve oxygen and nutrients than lakes.

Output: oxygen


Input:
Sentence1: Humans are also placental mammals.
Sentence2: humans develop a placenta during pregnancy.

Output: Humans


Input:
Sentence1: Amphibians are the first true tetrapods, or vertebrates with four limbs.
Sentence2: amphibians are the first true animals with backbones with four limbs.

Output: Amphibians


Input:
Sentence1: Amphibians are the first true tetrapods, or vertebrates with four limbs.
Sentence2: amphibians are the first true animals with backbones with four limbs.

Output: first


Input:
Sentence1: Amphibians are the first true tetrapods, or vertebrates with four limbs.
Sentence2: amphibians are the first true animals with backbones with four limbs.

Output: four


Input:
Sentence1: Amphibians are the first true tetrapods, or vertebrates with four limbs.
Sentence2: amphibians are the first true animals with backbones with four limbs.

Output: limbs


Input:
Sentence1: Amphibians are the first true tetrapods, or vertebrates with four limbs.
Sentence2: amphibians are the first true animals with backbones with four limbs.

Output: true


Input:
Sentence1: Mitosis is cell division.
Sentence2: Eukaryotes have more complex mitosis than prokaryotes.

Output: Mitosis


Input:
Sentence1: glass cause refraction of light.
Sentence2: Refraction Refraction is the bending of light rays.

Output: light


Input:
Sentence1: glass cause refraction of light.
Sentence2: Refraction Refraction is the bending of light rays.

Output: refraction


Input:
Sentence1: Mammals breathe with the help of a diaphragm.
Sentence2: Belly breathing uses the diaphragm, which helps relax the lungs.

Output: diaphragm


Input:
Sentence1: Mammals breathe with the help of a diaphragm.
Sentence2: Belly breathing uses the diaphragm, which helps relax the lungs.

Output: help


Input:
Sentence1: Some parasites kill their host, but most do not.
Sentence2: Parasites get their nutrients from the body they live in.

Output: parasites


Input:
Sentence1: the uterus is used in reproduction.
Sentence2: Reproduction uses the same organ as menstruation.

Output: reproduction


Input:
Sentence1: Light is made of photons .
Sentence2: Seeing requires photons.

Output: photons


Input:
Sentence1: Condensation is water vapor changing to liquid water.
Sentence2: Reducing heat energy changes vapor into water.

Output: vapor


Input:
Sentence1: Condensation is water vapor changing to liquid water.
Sentence2: Reducing heat energy changes vapor into water.

Output: water


Input:
Sentence1: conserving water can be used for survival in a dry environment.
Sentence2: Plants survive with the help of water.

Output: survival