Input:
Sentence1: Bacteria may spread directly from one person to another.
Sentence2: Bacteria and blue-green bacteria are prokaryotic cells.

Output: Bacteria


Input:
Sentence1: if an object reflects light toward the eye then that object can be seen.
Sentence2: Light is focussed on the retina.

Output: light


Input:
Sentence1: creating paper requires cutting down trees.
Sentence2: Rainforests are destroyed by logging and all of the trees are cut down.

Output: cutting


Input:
Sentence1: creating paper requires cutting down trees.
Sentence2: Rainforests are destroyed by logging and all of the trees are cut down.

Output: down


Input:
Sentence1: creating paper requires cutting down trees.
Sentence2: Rainforests are destroyed by logging and all of the trees are cut down.

Output: trees


Input:
Sentence1: Most precipitation occurs as rainfall.
Sentence2: lack of moisture in the air causes low amounts of precipitation.

Output: precipitation


Input:
Sentence1: All pain receptors are free nerve endings.
Sentence2: free nerve endings are found in the skin.

Output: endings


Input:
Sentence1: All pain receptors are free nerve endings.
Sentence2: free nerve endings are found in the skin.

Output: free


Input:
Sentence1: All pain receptors are free nerve endings.
Sentence2: free nerve endings are found in the skin.

Output: nerve


Input:
Sentence1: Viruses are not affected by antibiotics.
Sentence2: Viruses are not affected by medicine that helps prevent infection.

Output: Viruses


Input:
Sentence1: Viruses are not affected by antibiotics.
Sentence2: Viruses are not affected by medicine that helps prevent infection.

Output: affected


Input:
Sentence1: Viruses are not affected by antibiotics.
Sentence2: Viruses are not affected by medicine that helps prevent infection.

Output: not


Input:
Sentence1: an incandescent light bulb converts electricity into light by sending electricity through a filament.
Sentence2: light bulbs are powered by heat.

Output: bulb


Input:
Sentence1: When it rains, the rain moistens the soil.
Sentence2: water vapor condensing in the clouds causes soil to moisten.

Output: moistens


Input:
Sentence1: When it rains, the rain moistens the soil.
Sentence2: water vapor condensing in the clouds causes soil to moisten.

Output: soil


Input:
Sentence1: Any infection can cause death.
Sentence2: scraping oneself can cause death.

Output: death


Input:
Sentence1: microscope is used to see small things by biologists by making them appear bigger.
Sentence2: Something invented by Leeuwenhoek is used to see small things by biologists by making them appear bigger.

Output: appear


Input:
Sentence1: microscope is used to see small things by biologists by making them appear bigger.
Sentence2: Something invented by Leeuwenhoek is used to see small things by biologists by making them appear bigger.

Output: bigger


Input:
Sentence1: microscope is used to see small things by biologists by making them appear bigger.
Sentence2: Something invented by Leeuwenhoek is used to see small things by biologists by making them appear bigger.

Output: biologists


Input:
Sentence1: microscope is used to see small things by biologists by making them appear bigger.
Sentence2: Something invented by Leeuwenhoek is used to see small things by biologists by making them appear bigger.

Output: making


Input:
Sentence1: microscope is used to see small things by biologists by making them appear bigger.
Sentence2: Something invented by Leeuwenhoek is used to see small things by biologists by making them appear bigger.

Output: see


Input:
Sentence1: microscope is used to see small things by biologists by making them appear bigger.
Sentence2: Something invented by Leeuwenhoek is used to see small things by biologists by making them appear bigger.

Output: small


Input:
Sentence1: microscope is used to see small things by biologists by making them appear bigger.
Sentence2: Something invented by Leeuwenhoek is used to see small things by biologists by making them appear bigger.

Output: things


Input:
Sentence1: microscope is used to see small things by biologists by making them appear bigger.
Sentence2: Something invented by Leeuwenhoek is used to see small things by biologists by making them appear bigger.

Output: used


Input:
Sentence1: some flowers become fruits.
Sentence2: Fruits Fruits and fruit juices provide important amounts of vitamin C and potassium.

Output: fruits


Input:
Sentence1: Ribosomes are larger and distinct from the ribosomes found in prokaryotes.
Sentence2: prokaryotes can make proteins.

Output: prokaryotes


Input:
Sentence1: Bird beaks are multi-functional tools.
Sentence2: beaks are used as tools.

Output: tools


Input:
Sentence1: Blood type is important for medical reasons.
Sentence2: Type O blood types are defined generally as warriors.

Output: Blood


Input:
Sentence1: Blood type is important for medical reasons.
Sentence2: Type O blood types are defined generally as warriors.

Output: type


Input:
Sentence1: The results of a planet's rotation is its length of day.
Sentence2: a planet has cycles caused by rotation.

Output: rotation


Input:
Sentence1: Butter is a fat that is a solid at room temperature.
Sentence2: Butter is a fat that is a solid between 5 and 27 degrees Celsius.

Output: Butter


Input:
Sentence1: Butter is a fat that is a solid at room temperature.
Sentence2: Butter is a fat that is a solid between 5 and 27 degrees Celsius.

Output: fat


Input:
Sentence1: Butter is a fat that is a solid at room temperature.
Sentence2: Butter is a fat that is a solid between 5 and 27 degrees Celsius.

Output: solid


Input:
Sentence1: Bryophytes occupy niches in moist habitats.
Sentence2: Animals and plants that live in the same place and share resources form a community biome niche .

Output: niches


Input:
Sentence1: Raw coal can be burned to produce electricity.
Sentence2: coal can cause a wire to heat up.

Output: coal


Input:
Sentence1: Only as long as there are batteries in the flashlight, the flashlight will function.
Sentence2: Chemical energy converted to light energy requires batteries.

Output: batteries


Input:
Sentence1: soil erosion means soil loss through wind.
Sentence2: Soil erosion is a serious problem in production agriculture.

Output: erosion


Input:
Sentence1: soil erosion means soil loss through wind.
Sentence2: Soil erosion is a serious problem in production agriculture.

Output: soil


Input:
Sentence1: Mammals have a layer of fat under the skin to help insulate the body.
Sentence2: Mammals have a layer of fat under the skin to provide warmth and comfort.

Output: Mammals


Input:
Sentence1: Mammals have a layer of fat under the skin to help insulate the body.
Sentence2: Mammals have a layer of fat under the skin to provide warmth and comfort.

Output: fat


Input:
Sentence1: Mammals have a layer of fat under the skin to help insulate the body.
Sentence2: Mammals have a layer of fat under the skin to provide warmth and comfort.

Output: have


Input:
Sentence1: Mammals have a layer of fat under the skin to help insulate the body.
Sentence2: Mammals have a layer of fat under the skin to provide warmth and comfort.

Output: layer


Input:
Sentence1: Mammals have a layer of fat under the skin to help insulate the body.
Sentence2: Mammals have a layer of fat under the skin to provide warmth and comfort.

Output: skin


Input:
Sentence1: Mammals have a layer of fat under the skin to help insulate the body.
Sentence2: Mammals have a layer of fat under the skin to provide warmth and comfort.

Output: under


Input:
Sentence1: Water contains dissolved solids, all kinds of minerals.
Sentence2: Something dissolved in water are chemical elements that are essential for body processes.

Output: Water


Input:
Sentence1: Water contains dissolved solids, all kinds of minerals.
Sentence2: Something dissolved in water are chemical elements that are essential for body processes.

Output: dissolved


Input:
Sentence1: Over medium heat, scramble the eggs.
Sentence2: Scrambled eggs are an example of a chemical reaction.

Output: eggs


Input:
Sentence1: Over medium heat, scramble the eggs.
Sentence2: Scrambled eggs are an example of a chemical reaction.

Output: scramble


Input:
Sentence1: All oaks are plants.
Sentence2: when an oak grows , the size of the leaves of that oak may increase.

Output: oaks


Input:
Sentence1: Custom foods and meals can be created.
Sentence2: astronauts require preserved meals for extended flights.

Output: meals


Input:
Sentence1: Honeypot ants are classified in the genus Myrmecocystus.
Sentence2: Members of the Myrmecocystus genus communicate via chemicals called pheromones.

Output: Myrmecocystus


Input:
Sentence1: Honeypot ants are classified in the genus Myrmecocystus.
Sentence2: Members of the Myrmecocystus genus communicate via chemicals called pheromones.

Output: genus


Input:
Sentence1: Beavers know how to cut wood and build dams.
Sentence2: Beavers can create lakes.

Output: Beavers


Input:
Sentence1: The addition of salt increases the density of water.
Sentence2: Increasing the density of water decreases its melting point.

Output: density


Input:
Sentence1: The addition of salt increases the density of water.
Sentence2: Increasing the density of water decreases its melting point.

Output: increases


Input:
Sentence1: Any antigen that causes an allergy is called an allergen.
Sentence2: Most common allergies are seasonal allergies.

Output: allergen


Input:
Sentence1: Any antigen that causes an allergy is called an allergen.
Sentence2: Most common allergies are seasonal allergies.

Output: allergy


Input:
Sentence1: Alternation of generation is typical of ferns and Bryophyta.
Sentence2: ferns have both asexual and sexual reproduction.

Output: ferns


Input:
Sentence1: Mammals conserve body heat with their hair or fur.
Sentence2: Bats Bats are mammals with wings.

Output: Mammals


Input:
Sentence1: seconds are used to measure time.
Sentence2: CPU time is measured in seconds.

Output: measure


Input:
Sentence1: Some animals, like moles and earthworms spend their entire lives underground.
Sentence2: Moles reside below the surface so that animal will be protected from a wild fire.

Output: moles


Input:
Sentence1: mineral graphite is used for making pencil lead.
Sentence2: Mineral graphite and clay are mixed together for a safe alternative to lead.

Output: graphite


Input:
Sentence1: mineral graphite is used for making pencil lead.
Sentence2: Mineral graphite and clay are mixed together for a safe alternative to lead.

Output: mineral


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: being buried under soil and mud changes vegetation into bogs through extreme pressure and heat.

Output: being


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: being buried under soil and mud changes vegetation into bogs through extreme pressure and heat.

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: being buried under soil and mud changes vegetation into bogs through extreme pressure and heat.

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: being buried under soil and mud changes vegetation into bogs through extreme pressure and heat.

Output: extreme


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: being buried under soil and mud changes vegetation into bogs through extreme pressure and heat.

Output: heat


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: being buried under soil and mud changes vegetation into bogs through extreme pressure and heat.

Output: into


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: being buried under soil and mud changes vegetation into bogs through extreme pressure and heat.

Output: mud


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: being buried under soil and mud changes vegetation into bogs through extreme pressure and heat.

Output: pressure


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: being buried under soil and mud changes vegetation into bogs through extreme pressure and heat.

Output: soil


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: being buried under soil and mud changes vegetation into bogs through extreme pressure and heat.

Output: through


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: being buried under soil and mud changes vegetation into bogs through extreme pressure and heat.

Output: under


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: being buried under soil and mud changes vegetation into bogs through extreme pressure and heat.

Output: vegetation


Input:
Sentence1: Influenza viruses are classified as orthomyxoviruses.
Sentence2: Antibiotics have no effect on influenza.

Output: Influenza


Input:
Sentence1: Excretion is the process of removing wastes and excess water from the body.
Sentence2: Once the water is removed, the waste becomes a semi- solid mass and is prepared for excretion.

Output: Excretion


Input:
Sentence1: a valley is formed by a river flowing.
Sentence2: Valleys are formed by fish habitats.

Output: formed


Input:
Sentence1: a valley is formed by a river flowing.
Sentence2: Valleys are formed by fish habitats.

Output: valley


Input:
Sentence1: Annelids are worms such as the familiar earthworm.
Sentence2: Annelids include earthworms and leeches.

Output: Annelids


Input:
Sentence1: Annelids are worms such as the familiar earthworm.
Sentence2: Annelids include earthworms and leeches.

Output: earthworm


Input:
Sentence1: Antibodies act as warriors.
Sentence2: Plasma cells are activated B cells that secrete warriors.

Output: warriors


Input:
Sentence1: Balanced eating is a way of eating that promotes good health.
Sentence2: dieting is a way of eating that promotes good health.

Output: eating


Input:
Sentence1: Balanced eating is a way of eating that promotes good health.
Sentence2: dieting is a way of eating that promotes good health.

Output: good


Input:
Sentence1: Balanced eating is a way of eating that promotes good health.
Sentence2: dieting is a way of eating that promotes good health.

Output: health


Input:
Sentence1: Balanced eating is a way of eating that promotes good health.
Sentence2: dieting is a way of eating that promotes good health.

Output: is


Input:
Sentence1: Balanced eating is a way of eating that promotes good health.
Sentence2: dieting is a way of eating that promotes good health.

Output: promotes


Input:
Sentence1: Balanced eating is a way of eating that promotes good health.
Sentence2: dieting is a way of eating that promotes good health.

Output: way


Input:
Sentence1: Haploid gametes unite to form diploid zygote.
Sentence2: Fertilization occurs when haploid gametes unite.

Output: Haploid


Input:
Sentence1: Haploid gametes unite to form diploid zygote.
Sentence2: Fertilization occurs when haploid gametes unite.

Output: gametes


Input:
Sentence1: Haploid gametes unite to form diploid zygote.
Sentence2: Fertilization occurs when haploid gametes unite.

Output: unite


Input:
Sentence1: Streams and rivers are crossed on rocks, beaver dams, on fallen trees or by wading.
Sentence2: Hydropower requires beavers damming streams with fallen trees.

Output: Streams


Input:
Sentence1: Streams and rivers are crossed on rocks, beaver dams, on fallen trees or by wading.
Sentence2: Hydropower requires beavers damming streams with fallen trees.

Output: beaver


Input:
Sentence1: Streams and rivers are crossed on rocks, beaver dams, on fallen trees or by wading.
Sentence2: Hydropower requires beavers damming streams with fallen trees.

Output: fallen


Input:
Sentence1: Streams and rivers are crossed on rocks, beaver dams, on fallen trees or by wading.
Sentence2: Hydropower requires beavers damming streams with fallen trees.

Output: trees


Input:
Sentence1: Air pollution harms the respiratory and circulatory systems.
Sentence2: Breathing pollutants can harm the respiratory system.

Output: respiratory


Input:
Sentence1: Air pollution harms the respiratory and circulatory systems.
Sentence2: Breathing pollutants can harm the respiratory system.

Output: systems


Input:
Sentence1: nuclear reactions in stars causes stars to produce light.
Sentence2: Neutrinos are produced in some nuclear reactions in stars.

Output: nuclear


Input:
Sentence1: nuclear reactions in stars causes stars to produce light.
Sentence2: Neutrinos are produced in some nuclear reactions in stars.

Output: reactions


Input:
Sentence1: Ozone depletion results in higher levels of UV radiation reaching Earth.
Sentence2: UV radiation causes DNA damage and mutations 3.3.

Output: UV


Input:
Sentence1: Ozone depletion results in higher levels of UV radiation reaching Earth.
Sentence2: UV radiation causes DNA damage and mutations 3.3.

Output: radiation


Input:
Sentence1: recycling has a positive impact on the environment.
Sentence2: Reuse of materials has a positive impact on the environment.

Output: environment


Input:
Sentence1: recycling has a positive impact on the environment.
Sentence2: Reuse of materials has a positive impact on the environment.

Output: impact


Input:
Sentence1: recycling has a positive impact on the environment.
Sentence2: Reuse of materials has a positive impact on the environment.

Output: positive


Input:
Sentence1: Ozone depletion results in higher levels of UV radiation reaching Earth.
Sentence2: stratosphere composition causes higher levels of UV radiation reaching Earth.

Output: Earth


Input:
Sentence1: Ozone depletion results in higher levels of UV radiation reaching Earth.
Sentence2: stratosphere composition causes higher levels of UV radiation reaching Earth.

Output: UV


Input:
Sentence1: Ozone depletion results in higher levels of UV radiation reaching Earth.
Sentence2: stratosphere composition causes higher levels of UV radiation reaching Earth.

Output: higher


Input:
Sentence1: Ozone depletion results in higher levels of UV radiation reaching Earth.
Sentence2: stratosphere composition causes higher levels of UV radiation reaching Earth.

Output: levels


Input:
Sentence1: Ozone depletion results in higher levels of UV radiation reaching Earth.
Sentence2: stratosphere composition causes higher levels of UV radiation reaching Earth.

Output: radiation


Input:
Sentence1: Ozone depletion results in higher levels of UV radiation reaching Earth.
Sentence2: stratosphere composition causes higher levels of UV radiation reaching Earth.

Output: reaching


Input:
Sentence1: Water density is determined by temperature.
Sentence2: When something freezes, the density changes.

Output: density


Input:
Sentence1: Marine species live mainly in shallow coastal waters.
Sentence2: Water species live mainly in shallow coastal waters.

Output: coastal


Input:
Sentence1: Marine species live mainly in shallow coastal waters.
Sentence2: Water species live mainly in shallow coastal waters.

Output: in


Input:
Sentence1: Marine species live mainly in shallow coastal waters.
Sentence2: Water species live mainly in shallow coastal waters.

Output: live


Input:
Sentence1: Marine species live mainly in shallow coastal waters.
Sentence2: Water species live mainly in shallow coastal waters.

Output: mainly


Input:
Sentence1: Marine species live mainly in shallow coastal waters.
Sentence2: Water species live mainly in shallow coastal waters.

Output: shallow


Input:
Sentence1: Marine species live mainly in shallow coastal waters.
Sentence2: Water species live mainly in shallow coastal waters.

Output: species


Input:
Sentence1: Marine species live mainly in shallow coastal waters.
Sentence2: Water species live mainly in shallow coastal waters.

Output: waters


Input:
Sentence1: Drought or rain also affect the harvest and the planning.
Sentence2: not enough precipitation will negatively affect the harvest.

Output: harvest


Input:
Sentence1: transpiration is when water vapor moves from plants into the atmosphere.
Sentence2: Transpiration is when water vapor moves from plants and falls to the earth's surface as rain and snow.

Output: from


Input:
Sentence1: transpiration is when water vapor moves from plants into the atmosphere.
Sentence2: Transpiration is when water vapor moves from plants and falls to the earth's surface as rain and snow.

Output: moves


Input:
Sentence1: transpiration is when water vapor moves from plants into the atmosphere.
Sentence2: Transpiration is when water vapor moves from plants and falls to the earth's surface as rain and snow.

Output: plants


Input:
Sentence1: transpiration is when water vapor moves from plants into the atmosphere.
Sentence2: Transpiration is when water vapor moves from plants and falls to the earth's surface as rain and snow.

Output: transpiration


Input:
Sentence1: transpiration is when water vapor moves from plants into the atmosphere.
Sentence2: Transpiration is when water vapor moves from plants and falls to the earth's surface as rain and snow.

Output: vapor


Input:
Sentence1: transpiration is when water vapor moves from plants into the atmosphere.
Sentence2: Transpiration is when water vapor moves from plants and falls to the earth's surface as rain and snow.

Output: water


Input:
Sentence1: transpiration is when water vapor moves from plants into the atmosphere.
Sentence2: Transpiration is when water vapor moves from plants and falls to the earth's surface as rain and snow.

Output: when


Input:
Sentence1: Aggression is behavior that is intended to cause harm or pain.
Sentence2: Aggression is behavior that is intended to cause hurt.

Output: Aggression


Input:
Sentence1: Aggression is behavior that is intended to cause harm or pain.
Sentence2: Aggression is behavior that is intended to cause hurt.

Output: behavior


Input:
Sentence1: Aggression is behavior that is intended to cause harm or pain.
Sentence2: Aggression is behavior that is intended to cause hurt.

Output: cause


Input:
Sentence1: Carbon monoxide is a gas produced by furnaces and other devices that burn fuel.
Sentence2: Carbon monoxide gas is an odorless and colorless gas that can kill.

Output: Carbon


Input:
Sentence1: Carbon monoxide is a gas produced by furnaces and other devices that burn fuel.
Sentence2: Carbon monoxide gas is an odorless and colorless gas that can kill.

Output: monoxide


Input:
Sentence1: Playing is one way mammals and other animals learn how to behave.
Sentence2: Playing is one way mammals and other animals learn how to be assertive.

Output: Playing


Input:
Sentence1: Playing is one way mammals and other animals learn how to behave.
Sentence2: Playing is one way mammals and other animals learn how to be assertive.

Output: animals


Input:
Sentence1: Playing is one way mammals and other animals learn how to behave.
Sentence2: Playing is one way mammals and other animals learn how to be assertive.

Output: mammals


Input:
Sentence1: Light is described both as wavelengths and photons.
Sentence2: a prism is used for refracting wavelengths and photons.

Output: photons


Input:
Sentence1: Light is described both as wavelengths and photons.
Sentence2: a prism is used for refracting wavelengths and photons.

Output: wavelengths


Input:
Sentence1: Puberty is the period during which humans become sexually mature.
Sentence2: Before puberty, adolescents experience their highest nutritional demand since infancy.

Output: Puberty


Input:
Sentence1: Plants are the primary producers on earth.
Sentence2: Bacteria in the soil convert nitrogen into a form usable by producers.

Output: producers


Input:
Sentence1: Plants use unsaturated fatty acids to store energy.
Sentence2: Fish oils contain highly unsaturated fatty acids.

Output: acids


Input:
Sentence1: Plants use unsaturated fatty acids to store energy.
Sentence2: Fish oils contain highly unsaturated fatty acids.

Output: fatty


Input:
Sentence1: The glaciers have weathered unique holes in the rock formations.
Sentence2: A glacier causes weathering on rock formations.

Output: formations


Input:
Sentence1: The glaciers have weathered unique holes in the rock formations.
Sentence2: A glacier causes weathering on rock formations.

Output: rock


Input:
Sentence1: global warming is when worldwide temperature increases.
Sentence2: Global warming blamed on CO2.

Output: global


Input:
Sentence1: global warming is when worldwide temperature increases.
Sentence2: Global warming blamed on CO2.

Output: warming


Input:
Sentence1: Behaviors can be learned through play.
Sentence2: Kittens practice hunting by playing.

Output: play


Input:
Sentence1: Apollo 13 spacecraft is launched.
Sentence2: Propulsion was used for flying Apollo 13.

Output: 13


Input:
Sentence1: Apollo 13 spacecraft is launched.
Sentence2: Propulsion was used for flying Apollo 13.

Output: Apollo


Input:
Sentence1: when the seasons change from the summer to the fall , the amount of daylight will decrease.
Sentence2: Seasons are caused by the Earth's distance from the Sun changing.

Output: seasons


Input:
Sentence1: Growth is faster during infancy than it is during puberty.
Sentence2: Growth is faster in infancy than in adolescence.

Output: Growth


Input:
Sentence1: Growth is faster during infancy than it is during puberty.
Sentence2: Growth is faster in infancy than in adolescence.

Output: faster


Input:
Sentence1: Frogs, toads and salamanders are amphibians.
Sentence2: Salamanders have a relatively complex circulatory system with a three-chambered heart.

Output: salamanders


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

Output: caused


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

Output: exposure


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

Output: smoke


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

Output: tobacco


Input:
Sentence1: Some pelycosaurs gave rise to a group of animals called therapsids.
Sentence2: Some pelycosaurs gave rise to reptiles ancestral to mammals.

Output: Some


Input:
Sentence1: Some pelycosaurs gave rise to a group of animals called therapsids.
Sentence2: Some pelycosaurs gave rise to reptiles ancestral to mammals.

Output: gave


Input:
Sentence1: Some pelycosaurs gave rise to a group of animals called therapsids.
Sentence2: Some pelycosaurs gave rise to reptiles ancestral to mammals.

Output: pelycosaurs


Input:
Sentence1: Some pelycosaurs gave rise to a group of animals called therapsids.
Sentence2: Some pelycosaurs gave rise to reptiles ancestral to mammals.

Output: rise


Input:
Sentence1: Organic Matter Organic matter is the varied array of carbon-containing compounds in the soil.
Sentence2: Decomposition increases the amount of carbon-containing compounds in the soil.

Output: carbon-containing


Input:
Sentence1: Organic Matter Organic matter is the varied array of carbon-containing compounds in the soil.
Sentence2: Decomposition increases the amount of carbon-containing compounds in the soil.

Output: compounds


Input:
Sentence1: Organic Matter Organic matter is the varied array of carbon-containing compounds in the soil.
Sentence2: Decomposition increases the amount of carbon-containing compounds in the soil.

Output: soil


Input:
Sentence1: Survival is to live, to live means hope.
Sentence2: Population size influences the chances of a species living.

Output: live


Input:
Sentence1: Blood pH may become unbalanced if the rate of breathing is too fast or too slow.
Sentence2: Normal human blood may become unbalanced if the rate of breathing is too fast or too slow.

Output: become


Input:
Sentence1: Blood pH may become unbalanced if the rate of breathing is too fast or too slow.
Sentence2: Normal human blood may become unbalanced if the rate of breathing is too fast or too slow.

Output: breathing


Input:
Sentence1: Blood pH may become unbalanced if the rate of breathing is too fast or too slow.
Sentence2: Normal human blood may become unbalanced if the rate of breathing is too fast or too slow.

Output: fast


Input:
Sentence1: Blood pH may become unbalanced if the rate of breathing is too fast or too slow.
Sentence2: Normal human blood may become unbalanced if the rate of breathing is too fast or too slow.

Output: may


Input:
Sentence1: Blood pH may become unbalanced if the rate of breathing is too fast or too slow.
Sentence2: Normal human blood may become unbalanced if the rate of breathing is too fast or too slow.

Output: rate


Input:
Sentence1: Blood pH may become unbalanced if the rate of breathing is too fast or too slow.
Sentence2: Normal human blood may become unbalanced if the rate of breathing is too fast or too slow.

Output: slow


Input:
Sentence1: Blood pH may become unbalanced if the rate of breathing is too fast or too slow.
Sentence2: Normal human blood may become unbalanced if the rate of breathing is too fast or too slow.

Output: too


Input:
Sentence1: Blood pH may become unbalanced if the rate of breathing is too fast or too slow.
Sentence2: Normal human blood may become unbalanced if the rate of breathing is too fast or too slow.

Output: unbalanced


Input:
Sentence1: Melting is a phase change.
Sentence2: When something melts, it does not change mass.

Output: Melting


Input:
Sentence1: hydropower requires damming a river.
Sentence2: Scientists agree that dams devastate rivers.

Output: damming


Input:
Sentence1: hydropower requires damming a river.
Sentence2: Scientists agree that dams devastate rivers.

Output: river


Input:
Sentence1: chlorophyll is used for absorbing light energy by plants.
Sentence2: Soemthing that makes plants green is used for absorbing light energy by plants.

Output: absorbing


Input:
Sentence1: chlorophyll is used for absorbing light energy by plants.
Sentence2: Soemthing that makes plants green is used for absorbing light energy by plants.

Output: by


Input:
Sentence1: chlorophyll is used for absorbing light energy by plants.
Sentence2: Soemthing that makes plants green is used for absorbing light energy by plants.

Output: energy


Input:
Sentence1: chlorophyll is used for absorbing light energy by plants.
Sentence2: Soemthing that makes plants green is used for absorbing light energy by plants.

Output: for


Input:
Sentence1: chlorophyll is used for absorbing light energy by plants.
Sentence2: Soemthing that makes plants green is used for absorbing light energy by plants.

Output: is


Input:
Sentence1: chlorophyll is used for absorbing light energy by plants.
Sentence2: Soemthing that makes plants green is used for absorbing light energy by plants.

Output: light


Input:
Sentence1: chlorophyll is used for absorbing light energy by plants.
Sentence2: Soemthing that makes plants green is used for absorbing light energy by plants.

Output: plants


Input:
Sentence1: chlorophyll is used for absorbing light energy by plants.
Sentence2: Soemthing that makes plants green is used for absorbing light energy by plants.

Output: used


Input:
Sentence1: Light seems to travel in rays or beams.
Sentence2: a mirror is used for reflecting rays or beams.

Output: beams


Input:
Sentence1: Light seems to travel in rays or beams.
Sentence2: a mirror is used for reflecting rays or beams.

Output: rays


Input:
Sentence1: Perennial types are planted outside in spring.
Sentence2: when a perennial grows, the size of its leaves may increase.

Output: Perennial


Input:
Sentence1: a flashlight converts chemical energy into light energy.
Sentence2: Chemical energy converted to light energy requires batteries.

Output: chemical


Input:
Sentence1: a flashlight converts chemical energy into light energy.
Sentence2: Chemical energy converted to light energy requires batteries.

Output: converts


Input:
Sentence1: a flashlight converts chemical energy into light energy.
Sentence2: Chemical energy converted to light energy requires batteries.

Output: energy


Input:
Sentence1: a flashlight converts chemical energy into light energy.
Sentence2: Chemical energy converted to light energy requires batteries.

Output: light


Input:
Sentence1: a flower 's purpose is to produce seeds.
Sentence2: a flower's purpose is to create new plants.

Output: 's


Input:
Sentence1: a flower 's purpose is to produce seeds.
Sentence2: a flower's purpose is to create new plants.

Output: flower


Input:
Sentence1: a flower 's purpose is to produce seeds.
Sentence2: a flower's purpose is to create new plants.

Output: purpose


Input:
Sentence1: Most reptiles have good eyesight and a keen sense of smell.
Sentence2: Most animals in the class reptilia have good eyesight and a keen sense of smell.

Output: Most


Input:
Sentence1: Most reptiles have good eyesight and a keen sense of smell.
Sentence2: Most animals in the class reptilia have good eyesight and a keen sense of smell.

Output: a


Input:
Sentence1: Most reptiles have good eyesight and a keen sense of smell.
Sentence2: Most animals in the class reptilia have good eyesight and a keen sense of smell.

Output: and


Input:
Sentence1: Most reptiles have good eyesight and a keen sense of smell.
Sentence2: Most animals in the class reptilia have good eyesight and a keen sense of smell.

Output: eyesight


Input:
Sentence1: Most reptiles have good eyesight and a keen sense of smell.
Sentence2: Most animals in the class reptilia have good eyesight and a keen sense of smell.

Output: good


Input:
Sentence1: Most reptiles have good eyesight and a keen sense of smell.
Sentence2: Most animals in the class reptilia have good eyesight and a keen sense of smell.

Output: have


Input:
Sentence1: Most reptiles have good eyesight and a keen sense of smell.
Sentence2: Most animals in the class reptilia have good eyesight and a keen sense of smell.

Output: keen


Input:
Sentence1: Most reptiles have good eyesight and a keen sense of smell.
Sentence2: Most animals in the class reptilia have good eyesight and a keen sense of smell.

Output: of


Input:
Sentence1: Most reptiles have good eyesight and a keen sense of smell.
Sentence2: Most animals in the class reptilia have good eyesight and a keen sense of smell.

Output: sense


Input:
Sentence1: Most reptiles have good eyesight and a keen sense of smell.
Sentence2: Most animals in the class reptilia have good eyesight and a keen sense of smell.

Output: smell


Input:
Sentence1: Predators Gulls are chief predators of eggs or young birds.
Sentence2: hiding can be used by animals like young birds.

Output: birds


Input:
Sentence1: Predators Gulls are chief predators of eggs or young birds.
Sentence2: hiding can be used by animals like young birds.

Output: young


Input:
Sentence1: Thermal energy transfer occurs by conduction, convection, and radiation.
Sentence2: When a cooler object touches a warmer object, thermal energy transfers.

Output: Thermal


Input:
Sentence1: Thermal energy transfer occurs by conduction, convection, and radiation.
Sentence2: When a cooler object touches a warmer object, thermal energy transfers.

Output: energy


Input:
Sentence1: Thermal energy transfer occurs by conduction, convection, and radiation.
Sentence2: When a cooler object touches a warmer object, thermal energy transfers.

Output: transfer


Input:
Sentence1: Chromosomes contain genes, which code for proteins.
Sentence2: Protein builds and repairs body tissue.

Output: proteins


Input:
Sentence1: Digestive enzymes are necessary for a complete digestion.
Sentence2: Enzymes break down food into components the body can absorb.

Output: enzymes


Input:
Sentence1: Landslides can be destructive.
Sentence2: erosion can cause destruction.

Output: destructive


Input:
Sentence1: completing a circuit causes electricity to flow through that circuit.
Sentence2: completing a circuit causes electrons to flow through that circuit.

Output: causes


Input:
Sentence1: completing a circuit causes electricity to flow through that circuit.
Sentence2: completing a circuit causes electrons to flow through that circuit.

Output: circuit


Input:
Sentence1: completing a circuit causes electricity to flow through that circuit.
Sentence2: completing a circuit causes electrons to flow through that circuit.

Output: completing


Input:
Sentence1: completing a circuit causes electricity to flow through that circuit.
Sentence2: completing a circuit causes electrons to flow through that circuit.

Output: flow


Input:
Sentence1: completing a circuit causes electricity to flow through that circuit.
Sentence2: completing a circuit causes electrons to flow through that circuit.

Output: that


Input:
Sentence1: completing a circuit causes electricity to flow through that circuit.
Sentence2: completing a circuit causes electrons to flow through that circuit.

Output: through


Input:
Sentence1: Climate is generally described in terms of temperature and moisture.
Sentence2: Climate is described as the measurement of heat.

Output: Climate


Input:
Sentence1: travelling requires navigation.
Sentence2: Going from place to place with an automobile requires navigation.

Output: navigation


Input:
Sentence1: Gymnosperms are vascular plants that produce seeds in cones.
Sentence2: Gymnosperms produce conifers.

Output: Gymnosperms


Input:
Sentence1: recycling has a positive impact on the environment.
Sentence2: certain Steel products have a positive impact on the environment.

Output: environment


Input:
Sentence1: recycling has a positive impact on the environment.
Sentence2: certain Steel products have a positive impact on the environment.

Output: impact


Input:
Sentence1: recycling has a positive impact on the environment.
Sentence2: certain Steel products have a positive impact on the environment.

Output: positive


Input:
Sentence1: the digestive system breaks food into nutrients for the body.
Sentence2: Meat is a nutrient-dense food.

Output: food


Input:
Sentence1: fat is used to keep animals warm.
Sentence2: Animals have insulation to stay warm.

Output: animals


Input:
Sentence1: fat is used to keep animals warm.
Sentence2: Animals have insulation to stay warm.

Output: warm


Input:
Sentence1: Mammals can also generate little bursts of heat by shivering.
Sentence2: Polar bears are mammals.

Output: Mammals


Input:
Sentence1: a freezer is used for cooling things.
Sentence2: Heat removal in convection cooling is based on the physical properties of the cooling media.

Output: cooling


Input:
Sentence1: And, a species can split into two species.
Sentence2: communities consist of populations of different things that can split into two.

Output: split


Input:
Sentence1: And, a species can split into two species.
Sentence2: communities consist of populations of different things that can split into two.

Output: two


Input:
Sentence1: Human embryos are fully human.
Sentence2: Chemical splashing can harm embryos.

Output: embryos


Input:
Sentence1: Ground tissue makes up most of the interior of a plant.
Sentence2: ground tissue makes up most of the interior of a dandelion.

Output: Ground


Input:
Sentence1: Ground tissue makes up most of the interior of a plant.
Sentence2: ground tissue makes up most of the interior of a dandelion.

Output: interior


Input:
Sentence1: Ground tissue makes up most of the interior of a plant.
Sentence2: ground tissue makes up most of the interior of a dandelion.

Output: makes


Input:
Sentence1: Ground tissue makes up most of the interior of a plant.
Sentence2: ground tissue makes up most of the interior of a dandelion.

Output: most


Input:
Sentence1: Ground tissue makes up most of the interior of a plant.
Sentence2: ground tissue makes up most of the interior of a dandelion.

Output: tissue


Input:
Sentence1: Most protists have motility.
Sentence2: Protists are one celled organisms.

Output: protists


Input:
Sentence1: electric devices require electrical energy to function.
Sentence2: PDAs require electrical energy to function.

Output: electrical


Input:
Sentence1: electric devices require electrical energy to function.
Sentence2: PDAs require electrical energy to function.

Output: energy


Input:
Sentence1: electric devices require electrical energy to function.
Sentence2: PDAs require electrical energy to function.

Output: function


Input:
Sentence1: electric devices require electrical energy to function.
Sentence2: PDAs require electrical energy to function.

Output: require


Input:
Sentence1: electric devices require electrical energy to function.
Sentence2: PDAs require electrical energy to function.

Output: to


Input:
Sentence1: condensing means changing from a gas into a liquid by reducing heat energy.
Sentence2: condensing means the opposite change of state to boiling.

Output: condensing


Input:
Sentence1: condensing means changing from a gas into a liquid by reducing heat energy.
Sentence2: condensing means the opposite change of state to boiling.

Output: means


Input:
Sentence1: Sponges are filter feeders.
Sentence2: Hawksbills feed primarily on filter feeders.

Output: feeders


Input:
Sentence1: Sponges are filter feeders.
Sentence2: Hawksbills feed primarily on filter feeders.

Output: filter


Input:
Sentence1: the volume of an object can be used to describe the size of that object.
Sentence2: the volume of a crystal ball can be used to describe the size of the crystal ball.

Output: be


Input:
Sentence1: the volume of an object can be used to describe the size of that object.
Sentence2: the volume of a crystal ball can be used to describe the size of the crystal ball.

Output: describe


Input:
Sentence1: the volume of an object can be used to describe the size of that object.
Sentence2: the volume of a crystal ball can be used to describe the size of the crystal ball.

Output: of


Input:
Sentence1: the volume of an object can be used to describe the size of that object.
Sentence2: the volume of a crystal ball can be used to describe the size of the crystal ball.

Output: size


Input:
Sentence1: the volume of an object can be used to describe the size of that object.
Sentence2: the volume of a crystal ball can be used to describe the size of the crystal ball.

Output: the


Input:
Sentence1: the volume of an object can be used to describe the size of that object.
Sentence2: the volume of a crystal ball can be used to describe the size of the crystal ball.

Output: used


Input:
Sentence1: the volume of an object can be used to describe the size of that object.
Sentence2: the volume of a crystal ball can be used to describe the size of the crystal ball.

Output: volume


Input:
Sentence1: a light bulb is used for seeing in the dark.
Sentence2: Conventional light bulbs generate light by heating a filament.

Output: bulb


Input:
Sentence1: a light bulb is used for seeing in the dark.
Sentence2: Conventional light bulbs generate light by heating a filament.

Output: light


Input:
Sentence1: DNA contains genetic instructions for proteins, and RNA helps assemble the proteins.
Sentence2: cells have proteins.

Output: proteins


Input:
Sentence1: electrocution causes harm to an organism.
Sentence2: Electrocution deaths as a result of a horse chewing on an electrical cord are fairly common.

Output: electrocution


Input:
Sentence1: Fertilization occurs when sperm swim to an egg inside an archegonium.
Sentence2: Fertilization occurs when sperm swim to an egg inside a flask-shaped organ.

Output: Fertilization


Input:
Sentence1: Fertilization occurs when sperm swim to an egg inside an archegonium.
Sentence2: Fertilization occurs when sperm swim to an egg inside a flask-shaped organ.

Output: egg


Input:
Sentence1: Fertilization occurs when sperm swim to an egg inside an archegonium.
Sentence2: Fertilization occurs when sperm swim to an egg inside a flask-shaped organ.

Output: occurs


Input:
Sentence1: Fertilization occurs when sperm swim to an egg inside an archegonium.
Sentence2: Fertilization occurs when sperm swim to an egg inside a flask-shaped organ.

Output: sperm


Input:
Sentence1: Fertilization occurs when sperm swim to an egg inside an archegonium.
Sentence2: Fertilization occurs when sperm swim to an egg inside a flask-shaped organ.

Output: swim


Input:
Sentence1: Most arthropods are insects.
Sentence2: Arthropods are eaten seasonally.

Output: arthropods


Input:
Sentence1: RNA is a small molecule that can squeeze through pores in the nuclear membrane.
Sentence2: RNA is ribonucleic acid Like DNA, it is a nucleic acid.

Output: RNA


Input:
Sentence1: Good health is vital to a good life.
Sentence2: Balanced eating promotes a good life.

Output: good


Input:
Sentence1: Good health is vital to a good life.
Sentence2: Balanced eating promotes a good life.

Output: life


Input:
Sentence1: Viruses cannot reproduce by themselves.
Sentence2: rabies cannot reproduce by itself.

Output: cannot


Input:
Sentence1: Viruses cannot reproduce by themselves.
Sentence2: rabies cannot reproduce by itself.

Output: reproduce


Input:
Sentence1: Meiosis is the type of cell division that produces gametes.
Sentence2: Gametes are haploid egg or sperm that fuse to form a zygote.

Output: gametes


Input:
Sentence1: eating prey requires catching prey.
Sentence2: Spiders catch insects.

Output: catching


Input:
Sentence1: landfills have a negative impact on the environment.
Sentence2: An example is a dump or landfill.

Output: landfills


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

Output: looseness


Input:
Sentence1: Polyps usually reproduce asexually.
Sentence2: Polyps usually reproduce several different ways.

Output: Polyps


Input:
Sentence1: Polyps usually reproduce asexually.
Sentence2: Polyps usually reproduce several different ways.

Output: reproduce


Input:
Sentence1: Polyps usually reproduce asexually.
Sentence2: Polyps usually reproduce several different ways.

Output: usually


Input:
Sentence1: a switch is used to start the flow of current in an electrical circuit.
Sentence2: a switch is used to start the flow of current in a path of devices.

Output: current


Input:
Sentence1: a switch is used to start the flow of current in an electrical circuit.
Sentence2: a switch is used to start the flow of current in a path of devices.

Output: flow


Input:
Sentence1: a switch is used to start the flow of current in an electrical circuit.
Sentence2: a switch is used to start the flow of current in a path of devices.

Output: start


Input:
Sentence1: a switch is used to start the flow of current in an electrical circuit.
Sentence2: a switch is used to start the flow of current in a path of devices.

Output: switch


Input:
Sentence1: a switch is used to start the flow of current in an electrical circuit.
Sentence2: a switch is used to start the flow of current in a path of devices.

Output: used


Input:
Sentence1: the emission of sulfur dioxide causes acid rain.
Sentence2: Acid rain is killing our forests and our fish.

Output: acid


Input:
Sentence1: the emission of sulfur dioxide causes acid rain.
Sentence2: Acid rain is killing our forests and our fish.

Output: rain


Input:
Sentence1: Biomolecules, such as proteins, are composed of one or many chains folded into compact forms.
Sentence2: Biomolecules are used to repair cells by the human body.

Output: Biomolecules


Input:
Sentence1: Fish have a two-chambered heart while mammals and birds have four chambered hearts.
Sentence2: Mammals and fish have different circulatory systems.

Output: mammals


Input:
Sentence1: Some species of reptiles can go several weeks between meals.
Sentence2: Some species of snakes can go several weeks between meals.

Output: Some


Input:
Sentence1: Some species of reptiles can go several weeks between meals.
Sentence2: Some species of snakes can go several weeks between meals.

Output: between


Input:
Sentence1: Some species of reptiles can go several weeks between meals.
Sentence2: Some species of snakes can go several weeks between meals.

Output: can


Input:
Sentence1: Some species of reptiles can go several weeks between meals.
Sentence2: Some species of snakes can go several weeks between meals.

Output: go


Input:
Sentence1: Some species of reptiles can go several weeks between meals.
Sentence2: Some species of snakes can go several weeks between meals.

Output: meals


Input:
Sentence1: Some species of reptiles can go several weeks between meals.
Sentence2: Some species of snakes can go several weeks between meals.

Output: several


Input:
Sentence1: Some species of reptiles can go several weeks between meals.
Sentence2: Some species of snakes can go several weeks between meals.

Output: species


Input:
Sentence1: Some species of reptiles can go several weeks between meals.
Sentence2: Some species of snakes can go several weeks between meals.

Output: weeks


Input:
Sentence1: cutting down trees has a negative impact on an ecosystem.
Sentence2: Cutting down trees has a negative impact on the homes of animals  in natural habitats.

Output: cutting


Input:
Sentence1: cutting down trees has a negative impact on an ecosystem.
Sentence2: Cutting down trees has a negative impact on the homes of animals  in natural habitats.

Output: down


Input:
Sentence1: cutting down trees has a negative impact on an ecosystem.
Sentence2: Cutting down trees has a negative impact on the homes of animals  in natural habitats.

Output: impact


Input:
Sentence1: cutting down trees has a negative impact on an ecosystem.
Sentence2: Cutting down trees has a negative impact on the homes of animals  in natural habitats.

Output: negative


Input:
Sentence1: cutting down trees has a negative impact on an ecosystem.
Sentence2: Cutting down trees has a negative impact on the homes of animals  in natural habitats.

Output: trees


Input:
Sentence1: Distances are in light years and times in years.
Sentence2: Distances are not measured in seconds.

Output: Distances


Input:
Sentence1: looking at bright objects has a negative impact on the eyes.
Sentence2: Sunglasses help protect the eyes from glare off the river surfaces.

Output: eyes


Input:
Sentence1: When algae dies, it uses oxygen to decompose.
Sentence2: Oil comes from sediment mixing with dead, oxygenated algae.

Output: dies


Input:
Sentence1: When algae dies, it uses oxygen to decompose.
Sentence2: Oil comes from sediment mixing with dead, oxygenated algae.

Output: oxygen


Input:
Sentence1: Bacteria are killed by intense heat for a certain time.
Sentence2: Hot temperatures have a negative impact on bacteria.

Output: Bacteria


Input:
Sentence1: infection can cause bodily tissues to swell.
Sentence2: An infection can cause edema.

Output: can


Input:
Sentence1: infection can cause bodily tissues to swell.
Sentence2: An infection can cause edema.

Output: cause


Input:
Sentence1: infection can cause bodily tissues to swell.
Sentence2: An infection can cause edema.

Output: infection


Input:
Sentence1: Phytoplankton are bacteria and algae that use sunlight to make food.
Sentence2: Sunlight beams down on the different types of algae.

Output: algae


Input:
Sentence1: Blood pH may become unbalanced if the rate of breathing is too fast or too slow.
Sentence2: If Someone Is Hyperventilating Hyperventilation is caused by breathing too deeply, too fast.

Output: breathing


Input:
Sentence1: Blood pH may become unbalanced if the rate of breathing is too fast or too slow.
Sentence2: If Someone Is Hyperventilating Hyperventilation is caused by breathing too deeply, too fast.

Output: fast


Input:
Sentence1: Blood pH may become unbalanced if the rate of breathing is too fast or too slow.
Sentence2: If Someone Is Hyperventilating Hyperventilation is caused by breathing too deeply, too fast.

Output: too


Input:
Sentence1: electrocution causes harm to an organism.
Sentence2: Electric shock causes harm to an organism.

Output: organism


Input:
Sentence1: a mutation in the sex cells of a parent can cause a new trait to appear in the parent 's offspring.
Sentence2: An adaptive trait helps an organism survive in a particular environment.

Output: trait


Input:
Sentence1: a cavern is formed by carbonic acid in groundwater seeping through rock and dissolving limestone.
Sentence2: A cavern is formed when calcite is dissolved.

Output: a


Input:
Sentence1: a cavern is formed by carbonic acid in groundwater seeping through rock and dissolving limestone.
Sentence2: A cavern is formed when calcite is dissolved.

Output: cavern


Input:
Sentence1: a cavern is formed by carbonic acid in groundwater seeping through rock and dissolving limestone.
Sentence2: A cavern is formed when calcite is dissolved.

Output: dissolving


Input:
Sentence1: a cavern is formed by carbonic acid in groundwater seeping through rock and dissolving limestone.
Sentence2: A cavern is formed when calcite is dissolved.

Output: formed


Input:
Sentence1: a cavern is formed by carbonic acid in groundwater seeping through rock and dissolving limestone.
Sentence2: A cavern is formed when calcite is dissolved.

Output: is


Input:
Sentence1: Some parasites kill their host, but most do not.
Sentence2: Pathogens induce a disease in their host.

Output: host


Input:
Sentence1: Flowers to be planted in between fruit plantings.
Sentence2: Flowers detect light and darkness.

Output: Flowers


Input:
Sentence1: Testosterone stimulates the reproductive organs to develop into male organs.
Sentence2: Testicles are male reproductive organs.

Output: male


Input:
Sentence1: Testosterone stimulates the reproductive organs to develop into male organs.
Sentence2: Testicles are male reproductive organs.

Output: organs


Input:
Sentence1: Viruses are incapable of reproducing on their own.
Sentence2: viruses cannot procreate.

Output: Viruses


Input:
Sentence1: The human being is self-aware.
Sentence2: If something that is self-aware disturbs animals in a location then those animals will move to a different location.

Output: self-aware


Input:
Sentence1: an image in a mirror is formed by reflecting light.
Sentence2: mirrors can be seen with our eyes.

Output: mirror


Input:
Sentence1: All sharks are predators.
Sentence2: hiding can be used for avoiding sharks.

Output: sharks


Input:
Sentence1: Insects generally have two pairs of wings for flight.
Sentence2: arachnids do not fly.

Output: flight


Input:
Sentence1: radioactive dating is used to determine the age of fossils.
Sentence2: Fossil Petrified wood is the state fossil.

Output: fossils


Input:
Sentence1: Leeches are external parasites.
Sentence2: Some leeches will kill their host, but most do not.

Output: Leeches


Input:
Sentence1: bacteria can cause people to become ill.
Sentence2: Signs of bacteria-related illness include nausea and diarrhea.

Output: ill


Input:
Sentence1: Nerve impulses are electrical in nature.
Sentence2: stimulus is turned into an electrical nature.

Output: electrical


Input:
Sentence1: Nerve impulses are electrical in nature.
Sentence2: stimulus is turned into an electrical nature.

Output: nature


Input:
Sentence1: Solar energy is provided by the sun and collected by a solar panel.
Sentence2: Solar panels must be in sunlight to produce power.

Output: panel


Input:
Sentence1: Solar energy is provided by the sun and collected by a solar panel.
Sentence2: Solar panels must be in sunlight to produce power.

Output: solar


Input:
Sentence1: smoking causes direct damage to the lungs.
Sentence2: Mammals are warm blooded, use lungs for respiration, and have four legs.

Output: lungs


Input:
Sentence1: Heat energy is measured in calories.
Sentence2: metling means changing from a solid into a liquid by adding something measured in calories.

Output: calories


Input:
Sentence1: Heat energy is measured in calories.
Sentence2: metling means changing from a solid into a liquid by adding something measured in calories.

Output: measured


Input:
Sentence1: Extinct animals include the dodo, the Tasmanian wolf, the great auk and the passenger pigeon.
Sentence2: The Tasmanian wolf species was unable to produce offspring.

Output: Tasmanian


Input:
Sentence1: Extinct animals include the dodo, the Tasmanian wolf, the great auk and the passenger pigeon.
Sentence2: The Tasmanian wolf species was unable to produce offspring.

Output: wolf


Input:
Sentence1: Sweats Sweats are products that cause moisture accumulation on the skin.
Sentence2: When the body is hot, moisture accumulates on the skin.

Output: accumulation


Input:
Sentence1: Sweats Sweats are products that cause moisture accumulation on the skin.
Sentence2: When the body is hot, moisture accumulates on the skin.

Output: moisture


Input:
Sentence1: Sweats Sweats are products that cause moisture accumulation on the skin.
Sentence2: When the body is hot, moisture accumulates on the skin.

Output: skin


Input:
Sentence1: eyes are used for seeing by animals by sensing light.
Sentence2: Nocturnal animals' eyes are very sensitive and used for seeing.

Output: seeing


Input:
Sentence1: eyes are used for seeing by animals by sensing light.
Sentence2: Nocturnal animals' eyes are very sensitive and used for seeing.

Output: used


Input:
Sentence1: Increases in carbon dioxide make the greenhouse effect worse.
Sentence2: The greenhouse effect in the air  has become worse over the last decade.

Output: effect


Input:
Sentence1: Increases in carbon dioxide make the greenhouse effect worse.
Sentence2: The greenhouse effect in the air  has become worse over the last decade.

Output: greenhouse


Input:
Sentence1: Increases in carbon dioxide make the greenhouse effect worse.
Sentence2: The greenhouse effect in the air  has become worse over the last decade.

Output: worse


Input:
Sentence1: Rust stains are the result of oxidation.
Sentence2: metal becomes orange on the surface as a  result of oxidation.

Output: oxidation


Input:
Sentence1: Rust stains are the result of oxidation.
Sentence2: metal becomes orange on the surface as a  result of oxidation.

Output: result


Input:
Sentence1: an earthquake causes the ground to shake.
Sentence2: This shaking of the crust is called an earthquake.

Output: shake


Input:
Sentence1: if a tree falls then sunlight becomes available to the surrounding plants.
Sentence2: Plants grow better when surrounding trees fall.

Output: falls


Input:
Sentence1: if a tree falls then sunlight becomes available to the surrounding plants.
Sentence2: Plants grow better when surrounding trees fall.

Output: tree


Input:
Sentence1: a flower 's purpose is to produce seeds.
Sentence2: producing seeds allows seed to germinate in the spring so the plant can grow.

Output: produce


Input:
Sentence1: a flower 's purpose is to produce seeds.
Sentence2: producing seeds allows seed to germinate in the spring so the plant can grow.

Output: seeds


Input:
Sentence1: Mammals have a layer of fat under the skin to help insulate the body.
Sentence2: Sea lions have a layer of blubber to insulate the body.

Output: body


Input:
Sentence1: Mammals have a layer of fat under the skin to help insulate the body.
Sentence2: Sea lions have a layer of blubber to insulate the body.

Output: insulate


Input:
Sentence1: Mammals have a layer of fat under the skin to help insulate the body.
Sentence2: Sea lions have a layer of blubber to insulate the body.

Output: layer


Input:
Sentence1: Urine is the liquid waste product of the body that is excreted by the urinary system.
Sentence2: Liquid waste is put into the bladder.

Output: liquid


Input:
Sentence1: Urine is the liquid waste product of the body that is excreted by the urinary system.
Sentence2: Liquid waste is put into the bladder.

Output: waste


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

Output: plants


Input:
Sentence1: Producers use energy and inorganic molecules to make food.
Sentence2: Producers use energy and inorganic molecules for the retention of nutrients.

Output: Producers


Input:
Sentence1: Producers use energy and inorganic molecules to make food.
Sentence2: Producers use energy and inorganic molecules for the retention of nutrients.

Output: energy


Input:
Sentence1: Producers use energy and inorganic molecules to make food.
Sentence2: Producers use energy and inorganic molecules for the retention of nutrients.

Output: inorganic


Input:
Sentence1: Producers use energy and inorganic molecules to make food.
Sentence2: Producers use energy and inorganic molecules for the retention of nutrients.

Output: molecules


Input:
Sentence1: Producers use energy and inorganic molecules to make food.
Sentence2: Producers use energy and inorganic molecules for the retention of nutrients.

Output: use


Input:
Sentence1: Bryophytes are mosses, liverworts, and hornworts.
Sentence2: Most in the same group as mosses are small.

Output: mosses


Input:
Sentence1: Communication Communication is exchange of Information.
Sentence2: A radio is used for exchange of information.

Output: Information


Input:
Sentence1: Communication Communication is exchange of Information.
Sentence2: A radio is used for exchange of information.

Output: exchange


Input:
Sentence1: skin is used for breathing air by frogs.
Sentence2: Skin is used for breathing air by something that is eaten by bats.

Output: air


Input:
Sentence1: skin is used for breathing air by frogs.
Sentence2: Skin is used for breathing air by something that is eaten by bats.

Output: breathing


Input:
Sentence1: skin is used for breathing air by frogs.
Sentence2: Skin is used for breathing air by something that is eaten by bats.

Output: skin


Input:
Sentence1: skin is used for breathing air by frogs.
Sentence2: Skin is used for breathing air by something that is eaten by bats.

Output: used


Input:
Sentence1: Birds are endothermic tetrapod vertebrates.
Sentence2: Class Aves is for the birds, literally.

Output: Birds


Input:
Sentence1: Furry animals grow thicker coats to keep warm in the winter.
Sentence2: Furry animals grow thicker coats which has a positive impact on their survival.

Output: Furry


Input:
Sentence1: Furry animals grow thicker coats to keep warm in the winter.
Sentence2: Furry animals grow thicker coats which has a positive impact on their survival.

Output: animals


Input:
Sentence1: Furry animals grow thicker coats to keep warm in the winter.
Sentence2: Furry animals grow thicker coats which has a positive impact on their survival.

Output: coats


Input:
Sentence1: Furry animals grow thicker coats to keep warm in the winter.
Sentence2: Furry animals grow thicker coats which has a positive impact on their survival.

Output: grow


Input:
Sentence1: Furry animals grow thicker coats to keep warm in the winter.
Sentence2: Furry animals grow thicker coats which has a positive impact on their survival.

Output: thicker


Input:
Sentence1: the sun causes water to evaporate more quickly by adding heat.
Sentence2: In direct evaporative systems, the evaporation process humidifies the air.

Output: evaporate


Input:
Sentence1: unequal heating of Earth 's surface by the Sun causes global wind patterns.
Sentence2: Unequal absorption of radiation on the earth's surface causes global wind patterns.

Output: causes


Input:
Sentence1: unequal heating of Earth 's surface by the Sun causes global wind patterns.
Sentence2: Unequal absorption of radiation on the earth's surface causes global wind patterns.

Output: global


Input:
Sentence1: unequal heating of Earth 's surface by the Sun causes global wind patterns.
Sentence2: Unequal absorption of radiation on the earth's surface causes global wind patterns.

Output: patterns


Input:
Sentence1: unequal heating of Earth 's surface by the Sun causes global wind patterns.
Sentence2: Unequal absorption of radiation on the earth's surface causes global wind patterns.

Output: wind


Input:
Sentence1: the mass of a planet causes the pull of gravity on that planet.
Sentence2: Earth Jupiter Jupiter's mass is 318 times greater than Earth's mass.

Output: mass


Input:
Sentence1: Herbs are medicines and aids.
Sentence2: herbs are used for curing people when they are sick.

Output: Herbs


Input:
Sentence1: Secondary growth forms secondary vascular tissues and bark.
Sentence2: Secondary growth produces secondary vascular tissues in seed plants.

Output: secondary


Input:
Sentence1: Secondary growth forms secondary vascular tissues and bark.
Sentence2: Secondary growth produces secondary vascular tissues in seed plants.

Output: tissues


Input:
Sentence1: Secondary growth forms secondary vascular tissues and bark.
Sentence2: Secondary growth produces secondary vascular tissues in seed plants.

Output: vascular


Input:
Sentence1: Salamanders are a type of amphibian.
Sentence2: Some amphibians use their sense of smell to find a mate.

Output: amphibian


Input:
Sentence1: Mollusks have a circulatory system with one or two hearts that pump blood.
Sentence2: Blood is pumped by the heart into blood vessels called arteries.

Output: pump


Input:
Sentence1: Viruses are so small that they can be seen only with an electron microscope.
Sentence2: Tobacco Mosaic is so small that it can only be seen with an electron microscope.

Output: electron


Input:
Sentence1: Viruses are so small that they can be seen only with an electron microscope.
Sentence2: Tobacco Mosaic is so small that it can only be seen with an electron microscope.

Output: microscope


Input:
Sentence1: Rotational motion occurs when an object spins.
Sentence2: Earth's tilt on its spinning axis causes the seasons to change.

Output: spins


Input:
Sentence1: For example, the sun releases energy needed to drive photosynthesis.
Sentence2: The sun releases energy needed for plants to grow.

Output: energy


Input:
Sentence1: For example, the sun releases energy needed to drive photosynthesis.
Sentence2: The sun releases energy needed for plants to grow.

Output: sun


Input:
Sentence1: water vapor condensing in clouds causes rain.
Sentence2: Water vapor is a gas in the air.

Output: vapor


Input:
Sentence1: water vapor condensing in clouds causes rain.
Sentence2: Water vapor is a gas in the air.

Output: water


Input:
Sentence1: Mammals breathe with the help of a diaphragm.
Sentence2: Hiccups are a result of spasms of the diaphragm.

Output: diaphragm


Input:
Sentence1: Movement is thought in motion.
Sentence2: migration is a type of motion that changes population size.

Output: motion


Input:
Sentence1: exercise has a positive impact on a human 's health.
Sentence2: Exercise has a positive impact on human longevity and reproduction.

Output: exercise


Input:
Sentence1: exercise has a positive impact on a human 's health.
Sentence2: Exercise has a positive impact on human longevity and reproduction.

Output: human


Input:
Sentence1: exercise has a positive impact on a human 's health.
Sentence2: Exercise has a positive impact on human longevity and reproduction.

Output: impact


Input:
Sentence1: exercise has a positive impact on a human 's health.
Sentence2: Exercise has a positive impact on human longevity and reproduction.

Output: positive


Input:
Sentence1: tadpole changes into a frog.
Sentence2: there is a name of the larval stage in frogs.

Output: frog


Input:
Sentence1: Bottleneck effect occurs when a population suddenly gets much smaller.
Sentence2: Human communication is the bottleneck.

Output: Bottleneck


Input:
Sentence1: a light bulb requires electrical energy to produce light.
Sentence2: Ray translates as light .

Output: light


Input:
Sentence1: wind is used for producing electricity.
Sentence2: Differential heating of air can be harnessed for electricity production.

Output: electricity


Input:
Sentence1: faulting of rock in Earth 's crust causes earthquakes.
Sentence2: fault movement forms earthquakes.

Output: earthquakes


Input:
Sentence1: Bryophytes depend on moisture to reproduce.
Sentence2: Mosses are the most common bryophytes.

Output: Bryophytes


Input:
Sentence1: a light bulb requires electrical energy to produce light.
Sentence2: Additional track lighting brightens the overall space.

Output: light


Input:
Sentence1: Precipitation falls on the windward side of the mountain range.
Sentence2: Mountains have higher precipitation than adjacent lowlands.

Output: Precipitation


Input:
Sentence1: wind is used for producing electricity.
Sentence2: Turbines are used to producing electricity.

Output: electricity


Input:
Sentence1: wind is used for producing electricity.
Sentence2: Turbines are used to producing electricity.

Output: producing


Input:
Sentence1: Reproduction is the process by which organisms give rise to offspring.
Sentence2: Mutations are sources of variations in offspring.

Output: offspring


Input:
Sentence1: Mutations that lead to cancer usually occur in genes that control the cell cycle.
Sentence2: radiation can affect genes that control the cell cycle.

Output: cell


Input:
Sentence1: Mutations that lead to cancer usually occur in genes that control the cell cycle.
Sentence2: radiation can affect genes that control the cell cycle.

Output: control


Input:
Sentence1: Mutations that lead to cancer usually occur in genes that control the cell cycle.
Sentence2: radiation can affect genes that control the cell cycle.

Output: cycle


Input:
Sentence1: Mutations that lead to cancer usually occur in genes that control the cell cycle.
Sentence2: radiation can affect genes that control the cell cycle.

Output: genes


Input:
Sentence1: Some herbivores have more than one stomach.
Sentence2: Horses are non-ruminant herbivores, which means that unlike cows, they have only a single stomach.

Output: herbivores


Input:
Sentence1: Breathing affects the flow of hormones through the endocrine system.
Sentence2: Breathing allows hormones to travel throughout the body in the bloodstream.

Output: Breathing


Input:
Sentence1: an aquatic animal requires great amounts of water to survive.
Sentence2: Survival is about making a living.

Output: survive


Input:
Sentence1: Adolescence begins with puberty.
Sentence2: Growth is faster in infancy than in adolescence.

Output: Adolescence


Input:
Sentence1: Most modern gymnosperms are trees with woody trunks.
Sentence2: most modern evergreens are trees with woody trunks.

Output: Most


Input:
Sentence1: Most modern gymnosperms are trees with woody trunks.
Sentence2: most modern evergreens are trees with woody trunks.

Output: modern


Input:
Sentence1: Most modern gymnosperms are trees with woody trunks.
Sentence2: most modern evergreens are trees with woody trunks.

Output: trees


Input:
Sentence1: Most modern gymnosperms are trees with woody trunks.
Sentence2: most modern evergreens are trees with woody trunks.

Output: trunks


Input:
Sentence1: Most modern gymnosperms are trees with woody trunks.
Sentence2: most modern evergreens are trees with woody trunks.

Output: woody


Input:
Sentence1: if a planet becomes too hot then that planet cannot sustain life.
Sentence2: If a planet becomes too hot, then it cannot maintain a balanced ecosystem.

Output: becomes


Input:
Sentence1: if a planet becomes too hot then that planet cannot sustain life.
Sentence2: If a planet becomes too hot, then it cannot maintain a balanced ecosystem.

Output: cannot


Input:
Sentence1: if a planet becomes too hot then that planet cannot sustain life.
Sentence2: If a planet becomes too hot, then it cannot maintain a balanced ecosystem.

Output: hot


Input:
Sentence1: if a planet becomes too hot then that planet cannot sustain life.
Sentence2: If a planet becomes too hot, then it cannot maintain a balanced ecosystem.

Output: planet


Input:
Sentence1: if a planet becomes too hot then that planet cannot sustain life.
Sentence2: If a planet becomes too hot, then it cannot maintain a balanced ecosystem.

Output: too


Input:
Sentence1: a greenhouse is used to protect plants by keeping them warm.
Sentence2: a greenhouse helps plants grow well.

Output: greenhouse


Input:
Sentence1: Adolescence is a time of significant mental, emotional, and social changes.
Sentence2: hormones are to blame for a time of significant mental, emotional, and social changes.

Output: changes


Input:
Sentence1: Adolescence is a time of significant mental, emotional, and social changes.
Sentence2: hormones are to blame for a time of significant mental, emotional, and social changes.

Output: emotional


Input:
Sentence1: Adolescence is a time of significant mental, emotional, and social changes.
Sentence2: hormones are to blame for a time of significant mental, emotional, and social changes.

Output: mental


Input:
Sentence1: Adolescence is a time of significant mental, emotional, and social changes.
Sentence2: hormones are to blame for a time of significant mental, emotional, and social changes.

Output: significant


Input:
Sentence1: Adolescence is a time of significant mental, emotional, and social changes.
Sentence2: hormones are to blame for a time of significant mental, emotional, and social changes.

Output: social


Input:
Sentence1: Adolescence is a time of significant mental, emotional, and social changes.
Sentence2: hormones are to blame for a time of significant mental, emotional, and social changes.

Output: time


Input:
Sentence1: melting is when solids are heated above their melting point.
Sentence2: Thulium melts above 1545 Celsius.

Output: melting


Input:
Sentence1: Most mollusks have shells.
Sentence2: most cephalopods have shells.

Output: Most


Input:
Sentence1: Most mollusks have shells.
Sentence2: most cephalopods have shells.

Output: have


Input:
Sentence1: Most mollusks have shells.
Sentence2: most cephalopods have shells.

Output: shells


Input:
Sentence1: ice wedging is when ice causes rocks to crack by expanding in openings.
Sentence2: Water in the cracks of rocks freeze and expand.

Output: crack


Input:
Sentence1: ice wedging is when ice causes rocks to crack by expanding in openings.
Sentence2: Water in the cracks of rocks freeze and expand.

Output: rocks


Input:
Sentence1: a tape measure is used to measure length.
Sentence2: Meters measure length.

Output: length


Input:
Sentence1: the Earth being tilted on its rotating axis causes seasons.
Sentence2: the Earth being tilted on its rotating axis causes winter.

Output: Earth


Input:
Sentence1: the Earth being tilted on its rotating axis causes seasons.
Sentence2: the Earth being tilted on its rotating axis causes winter.

Output: axis


Input:
Sentence1: the Earth being tilted on its rotating axis causes seasons.
Sentence2: the Earth being tilted on its rotating axis causes winter.

Output: being


Input:
Sentence1: the Earth being tilted on its rotating axis causes seasons.
Sentence2: the Earth being tilted on its rotating axis causes winter.

Output: causes


Input:
Sentence1: the Earth being tilted on its rotating axis causes seasons.
Sentence2: the Earth being tilted on its rotating axis causes winter.

Output: rotating


Input:
Sentence1: the Earth being tilted on its rotating axis causes seasons.
Sentence2: the Earth being tilted on its rotating axis causes winter.

Output: tilted


Input:
Sentence1: Cells that divide uncontrollably may form a tumor, or abnormal mass of cells.
Sentence2: Cancer is a malignant tumor.

Output: tumor


Input:
Sentence1: Blood pressure is highest in arteries and lowest in veins.
Sentence2: Force on the vessel walls is highest in arteries and lowest in veins.

Output: arteries


Input:
Sentence1: Blood pressure is highest in arteries and lowest in veins.
Sentence2: Force on the vessel walls is highest in arteries and lowest in veins.

Output: highest


Input:
Sentence1: Blood pressure is highest in arteries and lowest in veins.
Sentence2: Force on the vessel walls is highest in arteries and lowest in veins.

Output: lowest


Input:
Sentence1: Blood pressure is highest in arteries and lowest in veins.
Sentence2: Force on the vessel walls is highest in arteries and lowest in veins.

Output: veins


Input:
Sentence1: the number of rings in a tree trunk can be used to estimate the age of the tree.
Sentence2: Tree rings are examined to learn the forest age and growth rate.

Output: age


Input:
Sentence1: the number of rings in a tree trunk can be used to estimate the age of the tree.
Sentence2: Tree rings are examined to learn the forest age and growth rate.

Output: rings


Input:
Sentence1: thirst is used to make an animal realize that it needs to replenish its bodily water by the body.
Sentence2: Drinking non-carbonated beverages will replenish fluids.

Output: replenish


Input:
Sentence1: sedimentary rocks are formed by deposition.
Sentence2: Limestone is formed by deposition.

Output: are


Input:
Sentence1: sedimentary rocks are formed by deposition.
Sentence2: Limestone is formed by deposition.

Output: by


Input:
Sentence1: sedimentary rocks are formed by deposition.
Sentence2: Limestone is formed by deposition.

Output: deposition


Input:
Sentence1: sedimentary rocks are formed by deposition.
Sentence2: Limestone is formed by deposition.

Output: formed


Input:
Sentence1: a plant requires photosynthesis to grow.
Sentence2: Legumes are typical of that type of plant.

Output: plant


Input:
Sentence1: high pressure systems cause clear weather.
Sentence2: Bermuda high-pressure systems are a frequent summer visitor.

Output: high


Input:
Sentence1: high pressure systems cause clear weather.
Sentence2: Bermuda high-pressure systems are a frequent summer visitor.

Output: pressure


Input:
Sentence1: high pressure systems cause clear weather.
Sentence2: Bermuda high-pressure systems are a frequent summer visitor.

Output: systems


Input:
Sentence1: Combustion is a type of oxidation reaction.
Sentence2: high temperatures can cause a type of oxidation reaction.

Output: oxidation


Input:
Sentence1: Combustion is a type of oxidation reaction.
Sentence2: high temperatures can cause a type of oxidation reaction.

Output: reaction


Input:
Sentence1: carbon dioxide concentrations in the air have increased over the last decade dramatically.
Sentence2: Carbon dioxide is formed by burning carbon.

Output: dioxide


Input:
Sentence1: Natural gas is the cleanest of the fossil fuels.
Sentence2: Heat and pressure create fossil fuels out of dead prehistoric beings.

Output: fossil


Input:
Sentence1: Natural gas is the cleanest of the fossil fuels.
Sentence2: Heat and pressure create fossil fuels out of dead prehistoric beings.

Output: fuels


Input:
Sentence1: magnetism can cause objects to repel each other.
Sentence2: Electrical currents can cause objects to repel each other.

Output: each


Input:
Sentence1: magnetism can cause objects to repel each other.
Sentence2: Electrical currents can cause objects to repel each other.

Output: objects


Input:
Sentence1: magnetism can cause objects to repel each other.
Sentence2: Electrical currents can cause objects to repel each other.

Output: other


Input:
Sentence1: magnetism can cause objects to repel each other.
Sentence2: Electrical currents can cause objects to repel each other.

Output: repel


Input:
Sentence1: Fish have a centralized nervous system with a brain.
Sentence2: fish are vertebrates.

Output: Fish


Input:
Sentence1: Like frogs, salamanders are amphibians.
Sentence2: some amphibians use their sense of smell to find a mate.

Output: amphibians


Input:
Sentence1: Polyps usually reproduce asexually.
Sentence2: Coral polyps are united into colonies.

Output: Polyps


Input:
Sentence1: using cell phones can cause people to become distracted.
Sentence2: Aggressive driving combined with a distracted driver can quickly escalate into a lethal situation.

Output: distracted


Input:
Sentence1: rocks interacting with wind over long periods of time causes weathering.
Sentence2: On Earth, rocks are weathered by wind and water, creating soil and sand.

Output: weathering


Input:
Sentence1: rocks interacting with wind over long periods of time causes weathering.
Sentence2: On Earth, rocks are weathered by wind and water, creating soil and sand.

Output: wind


Input:
Sentence1: a switch is used to start the flow of current in an electrical circuit.
Sentence2: lights are on when there is flow of current in an electrical circuit.

Output: circuit


Input:
Sentence1: a switch is used to start the flow of current in an electrical circuit.
Sentence2: lights are on when there is flow of current in an electrical circuit.

Output: current


Input:
Sentence1: a switch is used to start the flow of current in an electrical circuit.
Sentence2: lights are on when there is flow of current in an electrical circuit.

Output: flow


Input:
Sentence1: Ice ages buried the planet in snow and ice for millions of years at a time.
Sentence2: Unmelted winter snow and ice accumulate from year to year, and an ice age can begin.

Output: ages


Input:
Sentence1: Ice ages buried the planet in snow and ice for millions of years at a time.
Sentence2: Unmelted winter snow and ice accumulate from year to year, and an ice age can begin.

Output: years


Input:
Sentence1: recycling has a positive impact on the environment.
Sentence2: Reusing plastic bags has a positive impact on the environment.

Output: environment


Input:
Sentence1: recycling has a positive impact on the environment.
Sentence2: Reusing plastic bags has a positive impact on the environment.

Output: impact


Input:
Sentence1: recycling has a positive impact on the environment.
Sentence2: Reusing plastic bags has a positive impact on the environment.

Output: positive


Input:
Sentence1: Pinions tolerate drought and alkaline soil, but prefer loose, well-drained soils.
Sentence2: well-drained soil has a positive impact on a plant 's roots' growth in that soil.

Output: well-drained


Input:
Sentence1: Eagles are a big bird.
Sentence2: a beak is used for catching prey by eagles.

Output: Eagles


Input:
Sentence1: ink is used for hiding from predators by octopuses.
Sentence2: Predators Predators of octopuses include sharks, whales, seals, large fish, eels and humans.

Output: predators


Input:
Sentence1: Populations of viruses do not grow through cell division because they are not cells.
Sentence2: Viruses are parasites of cells.

Output: cell


Input:
Sentence1: Populations of viruses do not grow through cell division because they are not cells.
Sentence2: Viruses are parasites of cells.

Output: cells


Input:
Sentence1: Ozone Ozone is one form of oxygen.
Sentence2: loss of a form of oxygen has created an hole over Antarctica.

Output: form


Input:
Sentence1: Ozone Ozone is one form of oxygen.
Sentence2: loss of a form of oxygen has created an hole over Antarctica.

Output: oxygen


Input:
Sentence1: Annelids have bodies that are segmented.
Sentence2: worms have segmented bodies.

Output: bodies


Input:
Sentence1: Annelids have bodies that are segmented.
Sentence2: worms have segmented bodies.

Output: segmented


Input:
Sentence1: Most copepods feed on phytoplankton.
Sentence2: most copepods feed on bacteria and algae that use sunlight to make food.

Output: copepods


Input:
Sentence1: Most copepods feed on phytoplankton.
Sentence2: most copepods feed on bacteria and algae that use sunlight to make food.

Output: feed


Input:
Sentence1: Most sands are weathered fragments of quartz.
Sentence2: Rocks interacting with wind over long periods of time results in sand.

Output: sands


Input:
Sentence1: Most organisms consume--and are consumed by--more than one species.
Sentence2: most living things consume and are consumed by more than one species.

Output: Most


Input:
Sentence1: Most organisms consume--and are consumed by--more than one species.
Sentence2: most living things consume and are consumed by more than one species.

Output: by--more


Input:
Sentence1: Most organisms consume--and are consumed by--more than one species.
Sentence2: most living things consume and are consumed by more than one species.

Output: consume--and


Input:
Sentence1: Most organisms consume--and are consumed by--more than one species.
Sentence2: most living things consume and are consumed by more than one species.

Output: consumed


Input:
Sentence1: Most organisms consume--and are consumed by--more than one species.
Sentence2: most living things consume and are consumed by more than one species.

Output: one


Input:
Sentence1: Most organisms consume--and are consumed by--more than one species.
Sentence2: most living things consume and are consumed by more than one species.

Output: species


Input:
Sentence1: Minerals are chemical elements that are essential for body processes.
Sentence2: salts are are chemical elements that are essential for body processes.

Output: body


Input:
Sentence1: Minerals are chemical elements that are essential for body processes.
Sentence2: salts are are chemical elements that are essential for body processes.

Output: chemical


Input:
Sentence1: Minerals are chemical elements that are essential for body processes.
Sentence2: salts are are chemical elements that are essential for body processes.

Output: elements


Input:
Sentence1: Minerals are chemical elements that are essential for body processes.
Sentence2: salts are are chemical elements that are essential for body processes.

Output: essential


Input:
Sentence1: Minerals are chemical elements that are essential for body processes.
Sentence2: salts are are chemical elements that are essential for body processes.

Output: processes


Input:
Sentence1: if weather is stormy then there is a greater chance of rain.
Sentence2: Rain is our usual form of precipitation.

Output: rain


Input:
Sentence1: Coal forms from dead plants, compacted.
Sentence2: dead plants can generate heat.

Output: dead


Input:
Sentence1: Coal forms from dead plants, compacted.
Sentence2: dead plants can generate heat.

Output: plants


Input:
Sentence1: a long tail can be used to move through water by an animal.
Sentence2: Tail fin is long and swept.

Output: long


Input:
Sentence1: a vehicle is used for travel.
Sentence2: Motorcycles are considered additional vehicles.

Output: vehicle


Input:
Sentence1: Rainbows form when raindrops refract sunlight.
Sentence2: sunlight causes rainbows.

Output: sunlight


Input:
Sentence1: Some viruses have an envelope of phospholipids and proteins.
Sentence2: Viruses are strange life forms.

Output: viruses


Input:
Sentence1: Biodiversity encourages a healthier ecosystem.
Sentence2: planting trees has a positive impact on biodiversity.

Output: Biodiversity


Input:
Sentence1: a mold spore has a negative impact on the respiratory system.
Sentence2: water-damaged carpets have a negative impact on the respiratory system.

Output: impact


Input:
Sentence1: a mold spore has a negative impact on the respiratory system.
Sentence2: water-damaged carpets have a negative impact on the respiratory system.

Output: negative


Input:
Sentence1: a mold spore has a negative impact on the respiratory system.
Sentence2: water-damaged carpets have a negative impact on the respiratory system.

Output: respiratory


Input:
Sentence1: a mold spore has a negative impact on the respiratory system.
Sentence2: water-damaged carpets have a negative impact on the respiratory system.

Output: system


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

Output: burried


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

Output: coal


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

Output: mud


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

Output: soil


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

Output: under


Input:
Sentence1: Meiosis, on the other hand, is a two stage process, ultimately producing four cells.
Sentence2: A two stage process is the type of cell division that produces gametes.

Output: process


Input:
Sentence1: Meiosis, on the other hand, is a two stage process, ultimately producing four cells.
Sentence2: A two stage process is the type of cell division that produces gametes.

Output: stage


Input:
Sentence1: Meiosis, on the other hand, is a two stage process, ultimately producing four cells.
Sentence2: A two stage process is the type of cell division that produces gametes.

Output: two


Input:
Sentence1: a telescope is used for observing stars by astronomers.
Sentence2: For instance, the two brightest stars in Orion are Betelgeuse and Rigel.

Output: stars


Input:
Sentence1: Most invertebrates have a nervous system.
Sentence2: jellyfish have a nervous system.

Output: have


Input:
Sentence1: Most invertebrates have a nervous system.
Sentence2: jellyfish have a nervous system.

Output: nervous


Input:
Sentence1: Most invertebrates have a nervous system.
Sentence2: jellyfish have a nervous system.

Output: system


Input:
Sentence1: if an organism becomes too hot then that organism may die.
Sentence2: If an organism becomes too hot then decomposers complete their cycle.

Output: becomes


Input:
Sentence1: if an organism becomes too hot then that organism may die.
Sentence2: If an organism becomes too hot then decomposers complete their cycle.

Output: hot


Input:
Sentence1: if an organism becomes too hot then that organism may die.
Sentence2: If an organism becomes too hot then decomposers complete their cycle.

Output: organism


Input:
Sentence1: if an organism becomes too hot then that organism may die.
Sentence2: If an organism becomes too hot then decomposers complete their cycle.

Output: then


Input:
Sentence1: if an organism becomes too hot then that organism may die.
Sentence2: If an organism becomes too hot then decomposers complete their cycle.

Output: too


Input:
Sentence1: Wound healing Wound healing is a critical aspect of surgery.
Sentence2: zinc can have a positive impact on surgery.

Output: surgery


Input:
Sentence1: Dolphins are an aquatic mammal closely related to whales and porpoises.
Sentence2: Dolphins require great amounts of water to survive.

Output: Dolphins


Input:
Sentence1: a solar panel converts sunlight into electricity.
Sentence2: Green plants and solar panels both capture energy from the sun.

Output: panel


Input:
Sentence1: a solar panel converts sunlight into electricity.
Sentence2: Green plants and solar panels both capture energy from the sun.

Output: solar


Input:
Sentence1: Immunodeficiency occurs when the immune system is not working properly.
Sentence2: Treatments are available when the immune system is not working properly.

Output: immune


Input:
Sentence1: Immunodeficiency occurs when the immune system is not working properly.
Sentence2: Treatments are available when the immune system is not working properly.

Output: properly


Input:
Sentence1: Immunodeficiency occurs when the immune system is not working properly.
Sentence2: Treatments are available when the immune system is not working properly.

Output: system


Input:
Sentence1: Immunodeficiency occurs when the immune system is not working properly.
Sentence2: Treatments are available when the immune system is not working properly.

Output: when


Input:
Sentence1: Immunodeficiency occurs when the immune system is not working properly.
Sentence2: Treatments are available when the immune system is not working properly.

Output: working


Input:
Sentence1: Stems Stems are the support structures of a plant.
Sentence2: Support structures of a plant are sometimes used to store water.

Output: structures


Input:
Sentence1: Stems Stems are the support structures of a plant.
Sentence2: Support structures of a plant are sometimes used to store water.

Output: support


Input:
Sentence1: changes in the pH of soil can cause plants to die.
Sentence2: sulfur can cause plants to die.

Output: cause


Input:
Sentence1: changes in the pH of soil can cause plants to die.
Sentence2: sulfur can cause plants to die.

Output: die


Input:
Sentence1: changes in the pH of soil can cause plants to die.
Sentence2: sulfur can cause plants to die.

Output: plants


Input:
Sentence1: changes in the pH of soil can cause plants to die.
Sentence2: sulfur can cause plants to die.

Output: to


Input:
Sentence1: During the day, the earth is heated up by the sun.
Sentence2: During the day, water evaporates more quickly than it does at night.

Output: During


Input:
Sentence1: During the day, the earth is heated up by the sun.
Sentence2: During the day, water evaporates more quickly than it does at night.

Output: day


Input:
Sentence1: During the day, the earth is heated up by the sun.
Sentence2: During the day, water evaporates more quickly than it does at night.

Output: the


Input:
Sentence1: landfills have a negative impact on the environment.
Sentence2: Less garbage goes into landfills.

Output: landfills


Input:
Sentence1: Cells are programmed to divide only a set number of times.
Sentence2: Parts means something has been divided.

Output: divide


Input:
Sentence1: Sponges are filter feeders.
Sentence2: Sponges trap and filter out food as water passes by.

Output: Sponges


Input:
Sentence1: a flashlight requires a source of electricity to produce light.
Sentence2: a lantern requires a source of electricity to produce light.

Output: electricity


Input:
Sentence1: a flashlight requires a source of electricity to produce light.
Sentence2: a lantern requires a source of electricity to produce light.

Output: light


Input:
Sentence1: a flashlight requires a source of electricity to produce light.
Sentence2: a lantern requires a source of electricity to produce light.

Output: produce


Input:
Sentence1: a flashlight requires a source of electricity to produce light.
Sentence2: a lantern requires a source of electricity to produce light.

Output: requires


Input:
Sentence1: a flashlight requires a source of electricity to produce light.
Sentence2: a lantern requires a source of electricity to produce light.

Output: source


Input:
Sentence1: Dinosaur bones and petrified wood are examples of fossil fuels.
Sentence2: operating an automobile usually requires dinosaurs.

Output: Dinosaur


Input:
Sentence1: Sex cells, also called gametes, are the sperm in males and the ova in females.
Sentence2: A mutation in the gametes of a parent can cause a new trait to appear in the parent 's offspring.

Output: gametes


Input:
Sentence1: Earthquake magnitude is a logarithmic measure of earthquake size.
Sentence2: A seismograph is a logarithmic measure of earthquake magnitude.

Output: Earthquake


Input:
Sentence1: Earthquake magnitude is a logarithmic measure of earthquake size.
Sentence2: A seismograph is a logarithmic measure of earthquake magnitude.

Output: logarithmic


Input:
Sentence1: Earthquake magnitude is a logarithmic measure of earthquake size.
Sentence2: A seismograph is a logarithmic measure of earthquake magnitude.

Output: magnitude


Input:
Sentence1: Fish Fish are the ultimate aquatic organism.
Sentence2: the ultimate aquatic organism has a circulatory system with a two-chambered heart.

Output: aquatic


Input:
Sentence1: Fish Fish are the ultimate aquatic organism.
Sentence2: the ultimate aquatic organism has a circulatory system with a two-chambered heart.

Output: organism


Input:
Sentence1: Fish Fish are the ultimate aquatic organism.
Sentence2: the ultimate aquatic organism has a circulatory system with a two-chambered heart.

Output: ultimate


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

Output: compete


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

Output: food


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

Output: mates


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

Output: may


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

Output: territory


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

Output: water


Input:
Sentence1: Earthquakes cause massive damage.
Sentence2: tectonic plates being pushed together causes massive damage.

Output: damage


Input:
Sentence1: Earthquakes cause massive damage.
Sentence2: tectonic plates being pushed together causes massive damage.

Output: massive


Input:
Sentence1: All monkeys are mammals.
Sentence2: monkeys conserve body heat with their hair or fur.

Output: monkeys


Input:
Sentence1: Watersheds are creeks, streams and rivers.
Sentence2: a river is a watershred.

Output: Watersheds


Input:
Sentence1: natural magnetism is used for pointing north by a compass.
Sentence2: fields make compasses point north.

Output: compass


Input:
Sentence1: natural magnetism is used for pointing north by a compass.
Sentence2: fields make compasses point north.

Output: north


Input:
Sentence1: natural magnetism is used for pointing north by a compass.
Sentence2: fields make compasses point north.

Output: pointing


Input:
Sentence1: Most species go through larval stages after hatching.
Sentence2: Glowworms are the larvae of some species.

Output: larval