Input:
Sentence1: Flight enables many insects to move quickly away from predators.
Sentence2: insects generally have two pairs of wings to move quickly away from predators.

Output: away


Input:
Sentence1: Flight enables many insects to move quickly away from predators.
Sentence2: insects generally have two pairs of wings to move quickly away from predators.

Output: move


Input:
Sentence1: Flight enables many insects to move quickly away from predators.
Sentence2: insects generally have two pairs of wings to move quickly away from predators.

Output: predators


Input:
Sentence1: Flight enables many insects to move quickly away from predators.
Sentence2: insects generally have two pairs of wings to move quickly away from predators.

Output: quickly


Input:
Sentence1: Energy enters ecosystems in the form of sunlight or chemical compounds.
Sentence2: Nature is comprised of many ecosystems which all depend upon energy.

Output: Energy


Input:
Sentence1: Energy enters ecosystems in the form of sunlight or chemical compounds.
Sentence2: Nature is comprised of many ecosystems which all depend upon energy.

Output: ecosystems


Input:
Sentence1: For example, hearing waves are transmitted by fluid in the inner ear.
Sentence2: fluid in the inner ear is used for sensing sound by animals.

Output: ear


Input:
Sentence1: For example, hearing waves are transmitted by fluid in the inner ear.
Sentence2: fluid in the inner ear is used for sensing sound by animals.

Output: fluid


Input:
Sentence1: For example, hearing waves are transmitted by fluid in the inner ear.
Sentence2: fluid in the inner ear is used for sensing sound by animals.

Output: inner


Input:
Sentence1: Tree is very large and a heavy producer.
Sentence2: trees make food for themselves and other organisms.

Output: Tree


Input:
Sentence1: sound can be used for communication by animals.
Sentence2: For mating, communication is between individuals of the same organism.

Output: communication


Input:
Sentence1: Nephrons are the structural and functional units of the kidneys.
Sentence2: things that have a glomerulus are the structural units of the kidneys.

Output: kidneys


Input:
Sentence1: An animal that is a predator gets food by killing and hunting other animals.
Sentence2: getting food by killing requires seeing prey.

Output: food


Input:
Sentence1: An animal that is a predator gets food by killing and hunting other animals.
Sentence2: getting food by killing requires seeing prey.

Output: gets


Input:
Sentence1: An animal that is a predator gets food by killing and hunting other animals.
Sentence2: getting food by killing requires seeing prey.

Output: killing


Input:
Sentence1: gravity pulls objects towards planets.
Sentence2: Gaia is our planet Earth.

Output: planets


Input:
Sentence1: Conventional myosin is required for cytokinesis .
Sentence2: Conventional myosin is required for the final stage of cell division.

Output: Conventional


Input:
Sentence1: Conventional myosin is required for cytokinesis .
Sentence2: Conventional myosin is required for the final stage of cell division.

Output: myosin


Input:
Sentence1: Conventional myosin is required for cytokinesis .
Sentence2: Conventional myosin is required for the final stage of cell division.

Output: required


Input:
Sentence1: Lancelet larvae are free-swimming.
Sentence2: After lancelet eggs are fertilized, they develop so that they can navigate in the water themselves.

Output: Lancelet


Input:
Sentence1: Ethologists usually study how animals behave in their natural environment.
Sentence2: Ethologists usually study how animals behave in their homes in an ecosystem.

Output: Ethologists


Input:
Sentence1: Ethologists usually study how animals behave in their natural environment.
Sentence2: Ethologists usually study how animals behave in their homes in an ecosystem.

Output: animals


Input:
Sentence1: Ethologists usually study how animals behave in their natural environment.
Sentence2: Ethologists usually study how animals behave in their homes in an ecosystem.

Output: behave


Input:
Sentence1: Ethologists usually study how animals behave in their natural environment.
Sentence2: Ethologists usually study how animals behave in their homes in an ecosystem.

Output: how


Input:
Sentence1: Ethologists usually study how animals behave in their natural environment.
Sentence2: Ethologists usually study how animals behave in their homes in an ecosystem.

Output: study


Input:
Sentence1: Ethologists usually study how animals behave in their natural environment.
Sentence2: Ethologists usually study how animals behave in their homes in an ecosystem.

Output: usually


Input:
Sentence1: a plant requires sunlight to grow.
Sentence2: The nature of sunlight Sunlight is electromagnetic energy.

Output: sunlight


Input:
Sentence1: Wetlands are extremely important biomes.
Sentence2: The habitat of spoonbills are extremely important biomes.

Output: biomes


Input:
Sentence1: Wetlands are extremely important biomes.
Sentence2: The habitat of spoonbills are extremely important biomes.

Output: extremely


Input:
Sentence1: Wetlands are extremely important biomes.
Sentence2: The habitat of spoonbills are extremely important biomes.

Output: important


Input:
Sentence1: if all members of a species cannot produce offspring then that species will likely become extinct.
Sentence2: Avian species are less likely to end up extinct if they produce offspring.

Output: extinct


Input:
Sentence1: if all members of a species cannot produce offspring then that species will likely become extinct.
Sentence2: Avian species are less likely to end up extinct if they produce offspring.

Output: offspring


Input:
Sentence1: if all members of a species cannot produce offspring then that species will likely become extinct.
Sentence2: Avian species are less likely to end up extinct if they produce offspring.

Output: produce


Input:
Sentence1: Water is the most important nutrient for animals and humans.
Sentence2: An animal requires water for survival.

Output: Water


Input:
Sentence1: oil is formed by layers of sediment pushing down on decomposing algae.
Sentence2: When algae dies, it uses oxygen to decompose.

Output: decomposing


Input:
Sentence1: Global warming threatens the entire planet.
Sentence2: Gases released during the use of fossil fuels threaten the entire planet.

Output: entire


Input:
Sentence1: Global warming threatens the entire planet.
Sentence2: Gases released during the use of fossil fuels threaten the entire planet.

Output: planet


Input:
Sentence1: Global warming threatens the entire planet.
Sentence2: Gases released during the use of fossil fuels threaten the entire planet.

Output: threatens


Input:
Sentence1: ice wedging is when ice causes rocks to crack by expanding in openings.
Sentence2: when ice causes rocks to crack by expanding in openings is the most important form of mechanical weathering.

Output: causes


Input:
Sentence1: ice wedging is when ice causes rocks to crack by expanding in openings.
Sentence2: when ice causes rocks to crack by expanding in openings is the most important form of mechanical weathering.

Output: crack


Input:
Sentence1: ice wedging is when ice causes rocks to crack by expanding in openings.
Sentence2: when ice causes rocks to crack by expanding in openings is the most important form of mechanical weathering.

Output: expanding


Input:
Sentence1: ice wedging is when ice causes rocks to crack by expanding in openings.
Sentence2: when ice causes rocks to crack by expanding in openings is the most important form of mechanical weathering.

Output: ice


Input:
Sentence1: ice wedging is when ice causes rocks to crack by expanding in openings.
Sentence2: when ice causes rocks to crack by expanding in openings is the most important form of mechanical weathering.

Output: openings


Input:
Sentence1: ice wedging is when ice causes rocks to crack by expanding in openings.
Sentence2: when ice causes rocks to crack by expanding in openings is the most important form of mechanical weathering.

Output: rocks


Input:
Sentence1: Sunburn symptoms are skin redness and pain, possible swelling, blisters, fever, headaches.
Sentence2: ultraviolet light causes skin redness and pain, possible swelling, blisters, fever, headaches.

Output: blisters


Input:
Sentence1: Sunburn symptoms are skin redness and pain, possible swelling, blisters, fever, headaches.
Sentence2: ultraviolet light causes skin redness and pain, possible swelling, blisters, fever, headaches.

Output: fever


Input:
Sentence1: Sunburn symptoms are skin redness and pain, possible swelling, blisters, fever, headaches.
Sentence2: ultraviolet light causes skin redness and pain, possible swelling, blisters, fever, headaches.

Output: headaches


Input:
Sentence1: Sunburn symptoms are skin redness and pain, possible swelling, blisters, fever, headaches.
Sentence2: ultraviolet light causes skin redness and pain, possible swelling, blisters, fever, headaches.

Output: pain


Input:
Sentence1: Sunburn symptoms are skin redness and pain, possible swelling, blisters, fever, headaches.
Sentence2: ultraviolet light causes skin redness and pain, possible swelling, blisters, fever, headaches.

Output: redness


Input:
Sentence1: Sunburn symptoms are skin redness and pain, possible swelling, blisters, fever, headaches.
Sentence2: ultraviolet light causes skin redness and pain, possible swelling, blisters, fever, headaches.

Output: skin


Input:
Sentence1: Sunburn symptoms are skin redness and pain, possible swelling, blisters, fever, headaches.
Sentence2: ultraviolet light causes skin redness and pain, possible swelling, blisters, fever, headaches.

Output: swelling


Input:
Sentence1: Immunity results from immunization.
Sentence2: Resistance to disease results from getting shots.

Output: Immunity


Input:
Sentence1: Immunity results from immunization.
Sentence2: Resistance to disease results from getting shots.

Output: results


Input:
Sentence1: a magnet moving in a coil of copper wire can cause an electric current.
Sentence2: a magnet moving in a coil of copper can cause a flow of electrons.

Output: cause


Input:
Sentence1: a magnet moving in a coil of copper wire can cause an electric current.
Sentence2: a magnet moving in a coil of copper can cause a flow of electrons.

Output: coil


Input:
Sentence1: a magnet moving in a coil of copper wire can cause an electric current.
Sentence2: a magnet moving in a coil of copper can cause a flow of electrons.

Output: copper


Input:
Sentence1: a magnet moving in a coil of copper wire can cause an electric current.
Sentence2: a magnet moving in a coil of copper can cause a flow of electrons.

Output: magnet


Input:
Sentence1: a magnet moving in a coil of copper wire can cause an electric current.
Sentence2: a magnet moving in a coil of copper can cause a flow of electrons.

Output: moving


Input:
Sentence1: Bryophytes Bryophytes include the mosses, liverworts, and hornworts.
Sentence2: mosses depend on moisture to reproduce.

Output: mosses


Input:
Sentence1: Meiosis is the type of cell division that produces gametes.
Sentence2: Meiosis is the type of cell division that can produce sperm.

Output: Meiosis


Input:
Sentence1: Meiosis is the type of cell division that produces gametes.
Sentence2: Meiosis is the type of cell division that can produce sperm.

Output: cell


Input:
Sentence1: Meiosis is the type of cell division that produces gametes.
Sentence2: Meiosis is the type of cell division that can produce sperm.

Output: division


Input:
Sentence1: Meiosis is the type of cell division that produces gametes.
Sentence2: Meiosis is the type of cell division that can produce sperm.

Output: produces


Input:
Sentence1: Meiosis is the type of cell division that produces gametes.
Sentence2: Meiosis is the type of cell division that can produce sperm.

Output: type


Input:
Sentence1: when a hemisphere is tilted away from the sun , that hemisphere receives less direct sunlight.
Sentence2: When a hemisphere is tilted away from the sun, that hemisphere receives less photons.

Output: away


Input:
Sentence1: when a hemisphere is tilted away from the sun , that hemisphere receives less direct sunlight.
Sentence2: When a hemisphere is tilted away from the sun, that hemisphere receives less photons.

Output: from


Input:
Sentence1: when a hemisphere is tilted away from the sun , that hemisphere receives less direct sunlight.
Sentence2: When a hemisphere is tilted away from the sun, that hemisphere receives less photons.

Output: hemisphere


Input:
Sentence1: when a hemisphere is tilted away from the sun , that hemisphere receives less direct sunlight.
Sentence2: When a hemisphere is tilted away from the sun, that hemisphere receives less photons.

Output: sun


Input:
Sentence1: when a hemisphere is tilted away from the sun , that hemisphere receives less direct sunlight.
Sentence2: When a hemisphere is tilted away from the sun, that hemisphere receives less photons.

Output: the


Input:
Sentence1: when a hemisphere is tilted away from the sun , that hemisphere receives less direct sunlight.
Sentence2: When a hemisphere is tilted away from the sun, that hemisphere receives less photons.

Output: tilted


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

Output: acid


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

Output: atmosphere


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

Output: burning


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

Output: causes


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

Output: coal


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

Output: dissolving


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

Output: from


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

Output: oil


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

Output: rain


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

Output: water


Input:
Sentence1: Chromosomes are the form of the genetic material of a cell during cell division.
Sentence2: DNA condenses to form the genetic material of a cell during cell division.

Output: cell


Input:
Sentence1: Chromosomes are the form of the genetic material of a cell during cell division.
Sentence2: DNA condenses to form the genetic material of a cell during cell division.

Output: division


Input:
Sentence1: Chromosomes are the form of the genetic material of a cell during cell division.
Sentence2: DNA condenses to form the genetic material of a cell during cell division.

Output: during


Input:
Sentence1: Chromosomes are the form of the genetic material of a cell during cell division.
Sentence2: DNA condenses to form the genetic material of a cell during cell division.

Output: form


Input:
Sentence1: Chromosomes are the form of the genetic material of a cell during cell division.
Sentence2: DNA condenses to form the genetic material of a cell during cell division.

Output: genetic


Input:
Sentence1: Chromosomes are the form of the genetic material of a cell during cell division.
Sentence2: DNA condenses to form the genetic material of a cell during cell division.

Output: material


Input:
Sentence1: Most plants continue to grow throughout their lives.
Sentence2: nutrients are required for growth throughout their lives.

Output: lives


Input:
Sentence1: Most plants continue to grow throughout their lives.
Sentence2: nutrients are required for growth throughout their lives.

Output: their


Input:
Sentence1: Most plants continue to grow throughout their lives.
Sentence2: nutrients are required for growth throughout their lives.

Output: throughout


Input:
Sentence1: Adolescence is the last stage of life before adulthood.
Sentence2: Life is very complex for the adolescent.

Output: Adolescence


Input:
Sentence1: living underground can be used for hiding from predators.
Sentence2: If rabbits live underground, they can hide from coyotes.

Output: can


Input:
Sentence1: living underground can be used for hiding from predators.
Sentence2: If rabbits live underground, they can hide from coyotes.

Output: from


Input:
Sentence1: living underground can be used for hiding from predators.
Sentence2: If rabbits live underground, they can hide from coyotes.

Output: hiding


Input:
Sentence1: living underground can be used for hiding from predators.
Sentence2: If rabbits live underground, they can hide from coyotes.

Output: living


Input:
Sentence1: living underground can be used for hiding from predators.
Sentence2: If rabbits live underground, they can hide from coyotes.

Output: underground


Input:
Sentence1: a light bulb requires electrical energy to produce light.
Sentence2: Energy-saving is important when electrical energy is used to produce light.

Output: electrical


Input:
Sentence1: a light bulb requires electrical energy to produce light.
Sentence2: Energy-saving is important when electrical energy is used to produce light.

Output: produce


Input:
Sentence1: Cells have multiple repair mechanisms to fix mutations in DNA.
Sentence2: Cells have multiple repair mechanisms to fix damage to DNA.

Output: Cells


Input:
Sentence1: Cells have multiple repair mechanisms to fix mutations in DNA.
Sentence2: Cells have multiple repair mechanisms to fix damage to DNA.

Output: fix


Input:
Sentence1: Cells have multiple repair mechanisms to fix mutations in DNA.
Sentence2: Cells have multiple repair mechanisms to fix damage to DNA.

Output: have


Input:
Sentence1: Cells have multiple repair mechanisms to fix mutations in DNA.
Sentence2: Cells have multiple repair mechanisms to fix damage to DNA.

Output: mechanisms


Input:
Sentence1: Cells have multiple repair mechanisms to fix mutations in DNA.
Sentence2: Cells have multiple repair mechanisms to fix damage to DNA.

Output: multiple


Input:
Sentence1: Cells have multiple repair mechanisms to fix mutations in DNA.
Sentence2: Cells have multiple repair mechanisms to fix damage to DNA.

Output: repair


Input:
Sentence1: a magnet moving in a coil of copper wire can cause an electric current.
Sentence2: An induction coil is simply a metal rod that is encircled by many turns of a copper wire.

Output: copper


Input:
Sentence1: a magnet moving in a coil of copper wire can cause an electric current.
Sentence2: An induction coil is simply a metal rod that is encircled by many turns of a copper wire.

Output: wire


Input:
Sentence1: Fog When driving, fog is an obstacle or a hindrance that makes things obscure.
Sentence2: hindrances to driving are formed by water vapor condensing in the air.

Output: driving


Input:
Sentence1: Fog When driving, fog is an obstacle or a hindrance that makes things obscure.
Sentence2: hindrances to driving are formed by water vapor condensing in the air.

Output: hindrance


Input:
Sentence1: Space travel is for trained astronauts only.
Sentence2: space travelers require preserved food for extended flights.

Output: Space


Input:
Sentence1: Space travel is for trained astronauts only.
Sentence2: space travelers require preserved food for extended flights.

Output: travel


Input:
Sentence1: Body heat is trapped in the haircoat.
Sentence2: The haircoat of an organism helps keep it warm.

Output: haircoat


Input:
Sentence1: erosion of soil has a negative impact on the environment.
Sentence2: Cattle can cause soil erosion.

Output: erosion


Input:
Sentence1: erosion of soil has a negative impact on the environment.
Sentence2: Cattle can cause soil erosion.

Output: soil


Input:
Sentence1: if an animal sweats then that animal 's bodily water decreases.
Sentence2: if a human sweats its bodily water decreases.

Output: bodily


Input:
Sentence1: if an animal sweats then that animal 's bodily water decreases.
Sentence2: if a human sweats its bodily water decreases.

Output: decreases


Input:
Sentence1: if an animal sweats then that animal 's bodily water decreases.
Sentence2: if a human sweats its bodily water decreases.

Output: sweats


Input:
Sentence1: if an animal sweats then that animal 's bodily water decreases.
Sentence2: if a human sweats its bodily water decreases.

Output: water


Input:
Sentence1: sinkholes are formed by precipitation.
Sentence2: Sinkholes are common in the southwestern portion of the subsection.

Output: sinkholes


Input:
Sentence1: nuclear reactions in stars causes stars to produce light.
Sentence2: nuclear reactions in stars causes stars to produce photons .

Output: causes


Input:
Sentence1: nuclear reactions in stars causes stars to produce light.
Sentence2: nuclear reactions in stars causes stars to produce photons .

Output: nuclear


Input:
Sentence1: nuclear reactions in stars causes stars to produce light.
Sentence2: nuclear reactions in stars causes stars to produce photons .

Output: produce


Input:
Sentence1: nuclear reactions in stars causes stars to produce light.
Sentence2: nuclear reactions in stars causes stars to produce photons .

Output: reactions


Input:
Sentence1: nuclear reactions in stars causes stars to produce light.
Sentence2: nuclear reactions in stars causes stars to produce photons .

Output: stars


Input:
Sentence1: hurricanes convert heat energy into mechanical energy.
Sentence2: Hurricanes A hurricane is a type of tropical cyclone.

Output: hurricanes


Input:
Sentence1: Opportunistic infections, such as Pneumocystis carinii pneumonia, begin to occur.
Sentence2: Opportunistic infections may be a result of an infection or injury of the lungs.

Output: Opportunistic


Input:
Sentence1: Thyroid hormones increase the rate of metabolism in cells throughout the body.
Sentence2: Cell metabolism is a heat production.

Output: metabolism


Input:
Sentence1: Mollusks reproduce sexually.
Sentence2: some animals with shells reproduce sexually.

Output: reproduce


Input:
Sentence1: Mollusks reproduce sexually.
Sentence2: some animals with shells reproduce sexually.

Output: sexually


Input:
Sentence1: Similarly, stars are referred to as suns, but our star is the Sun.
Sentence2: our star causes water to evaporate more quickly by adding heat.

Output: our


Input:
Sentence1: Similarly, stars are referred to as suns, but our star is the Sun.
Sentence2: our star causes water to evaporate more quickly by adding heat.

Output: star


Input:
Sentence1: Flowers and fruits are key features of the angiosperms.
Sentence2: Some angiosperms become fruit that can be eaten.

Output: angiosperms


Input:
Sentence1: Dinosaur bones, like many other artifacts, are fossilized.
Sentence2: radioactive dating is used to determine the age of dinosaur bones.

Output: Dinosaur


Input:
Sentence1: Dinosaur bones, like many other artifacts, are fossilized.
Sentence2: radioactive dating is used to determine the age of dinosaur bones.

Output: bones


Input:
Sentence1: a seismometer is used to measure the strength or magnitude of an earthquake.
Sentence2: A seismometer measures the intensity of the shaking of earthquakes.

Output: measure


Input:
Sentence1: a seismometer is used to measure the strength or magnitude of an earthquake.
Sentence2: A seismometer measures the intensity of the shaking of earthquakes.

Output: seismometer


Input:
Sentence1: All animals are heterotrophs.
Sentence2: All consumers are also called Heterotrophs.

Output: heterotrophs


Input:
Sentence1: Sepals are usually green, which camouflages the bud from possible consumers.
Sentence2: daylilies use camouflauge to protect their buds.

Output: camouflages


Input:
Sentence1: a plant requires photosynthesis to grow.
Sentence2: Hexazinone inhibits a plant to grow.

Output: grow


Input:
Sentence1: a plant requires photosynthesis to grow.
Sentence2: Hexazinone inhibits a plant to grow.

Output: plant


Input:
Sentence1: All chemical reactions require activation energy to get started.
Sentence2: Catalysts lower the activation energy.

Output: activation


Input:
Sentence1: a plant requires sunlight to grow.
Sentence2: Vegetables require sunlight to grow.

Output: grow


Input:
Sentence1: a plant requires sunlight to grow.
Sentence2: Vegetables require sunlight to grow.

Output: sunlight


Input:
Sentence1: Tactile sense is our ability to learn from our environment through our sense of touch.
Sentence2: Tactile sense is the ability to sense pressure.

Output: Tactile


Input:
Sentence1: Tactile sense is our ability to learn from our environment through our sense of touch.
Sentence2: Tactile sense is the ability to sense pressure.

Output: sense


Input:
Sentence1: All light is energy, which is eventually absorbed and turned into heat.
Sentence2: Light energy causes objects to warm up.

Output: energy


Input:
Sentence1: All light is energy, which is eventually absorbed and turned into heat.
Sentence2: Light energy causes objects to warm up.

Output: light


Input:
Sentence1: Male dogs use pheromones in urine to mark their territory.
Sentence2: Male dogs use something that attracts females in urine to mark their territory.

Output: Male


Input:
Sentence1: Male dogs use pheromones in urine to mark their territory.
Sentence2: Male dogs use something that attracts females in urine to mark their territory.

Output: dogs


Input:
Sentence1: Male dogs use pheromones in urine to mark their territory.
Sentence2: Male dogs use something that attracts females in urine to mark their territory.

Output: mark


Input:
Sentence1: Male dogs use pheromones in urine to mark their territory.
Sentence2: Male dogs use something that attracts females in urine to mark their territory.

Output: territory


Input:
Sentence1: Male dogs use pheromones in urine to mark their territory.
Sentence2: Male dogs use something that attracts females in urine to mark their territory.

Output: urine


Input:
Sentence1: bacteria cause food to spoil.
Sentence2: If food smells or looks spoiled, always throw it out.

Output: spoil


Input:
Sentence1: Animals use saturated fatty acids to store energy.
Sentence2: Killer whales are social animals.

Output: Animals


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

Output: burning


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

Output: electricity


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

Output: power


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

Output: produce


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

Output: stations


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

Output: used


Input:
Sentence1: building housing developments usually requires replacing animal habitats.
Sentence2: And as the habitat disappears, so do the animals which depend upon it for survival.

Output: animal


Input:
Sentence1: building housing developments usually requires replacing animal habitats.
Sentence2: And as the habitat disappears, so do the animals which depend upon it for survival.

Output: habitats


Input:
Sentence1: Pathogenic organisms that live inside cells have a neat adaptation.
Sentence2: Viruses are pathogenic organisms.

Output: Pathogenic


Input:
Sentence1: Pathogenic organisms that live inside cells have a neat adaptation.
Sentence2: Viruses are pathogenic organisms.

Output: organisms


Input:
Sentence1: satellite technology is used for predicting the weather.
Sentence2: Weather is what it's like outside each day.

Output: weather


Input:
Sentence1: And light broken into many pieces is a rainbow.
Sentence2: Sunlight and rain can cause light to be broken into many pieces.

Output: broken


Input:
Sentence1: And light broken into many pieces is a rainbow.
Sentence2: Sunlight and rain can cause light to be broken into many pieces.

Output: light


Input:
Sentence1: And light broken into many pieces is a rainbow.
Sentence2: Sunlight and rain can cause light to be broken into many pieces.

Output: pieces


Input:
Sentence1: webbed feet are used for moving faster through water by aquatic animals.
Sentence2: Feet are webbed and serve as a rudder.

Output: webbed


Input:
Sentence1: Mutations may change the structure of a chromosome or just change a single nucleotide.
Sentence2: Most mutations are beneficial to the organism.

Output: Mutations


Input:
Sentence1: Marine species live mainly in shallow coastal waters.
Sentence2: coastal water is calmer.

Output: coastal


Input:
Sentence1: Water is made up of H2O molecules.
Sentence2: cycles of freezing and thawing h2o causes ice wedging.

Output: H2O


Input:
Sentence1: a seismograph is used for measuring the size of an earthquake.
Sentence2: A version of a simple pendulum is used to measure the size of an earthquake.

Output: earthquake


Input:
Sentence1: a seismograph is used for measuring the size of an earthquake.
Sentence2: A version of a simple pendulum is used to measure the size of an earthquake.

Output: measuring


Input:
Sentence1: a seismograph is used for measuring the size of an earthquake.
Sentence2: A version of a simple pendulum is used to measure the size of an earthquake.

Output: size


Input:
Sentence1: thick fur can be used for keeping warm.
Sentence2: If Arctic foxes are in too cool weather, they warm up by their thick fur.

Output: warm


Input:
Sentence1: Just like humans, female flowers have ovaries.
Sentence2: female flowers are part of reproduction.

Output: female


Input:
Sentence1: Just like humans, female flowers have ovaries.
Sentence2: female flowers are part of reproduction.

Output: flowers


Input:
Sentence1: a flashlight requires a source of electricity to produce light.
Sentence2: Battery can be tested with flashlight.

Output: flashlight


Input:
Sentence1: an automobile engine transforms chemical energy into mechanical energy.
Sentence2: cars transform chemical energy into mechanical energy.

Output: chemical


Input:
Sentence1: an automobile engine transforms chemical energy into mechanical energy.
Sentence2: cars transform chemical energy into mechanical energy.

Output: energy


Input:
Sentence1: an automobile engine transforms chemical energy into mechanical energy.
Sentence2: cars transform chemical energy into mechanical energy.

Output: into


Input:
Sentence1: an automobile engine transforms chemical energy into mechanical energy.
Sentence2: cars transform chemical energy into mechanical energy.

Output: mechanical


Input:
Sentence1: an automobile engine transforms chemical energy into mechanical energy.
Sentence2: cars transform chemical energy into mechanical energy.

Output: transforms


Input:
Sentence1: optical tools are used for observing materials up close.
Sentence2: Materials Materials Materials are listed alphabetically.

Output: materials


Input:
Sentence1: when metal conducts heat , that metal expands.
Sentence2: When a metal rod is warmed, the transfer of heat is by conduction.

Output: conducts


Input:
Sentence1: Antibodies are protein molecules.
Sentence2: Plasma cells are activated B cells that secrete protein molecules.

Output: molecules


Input:
Sentence1: Antibodies are protein molecules.
Sentence2: Plasma cells are activated B cells that secrete protein molecules.

Output: protein


Input:
Sentence1: using a gasoline engine requires burning gasoline.
Sentence2: using a gasoline engine requires consuming gasoline.

Output: engine


Input:
Sentence1: using a gasoline engine requires burning gasoline.
Sentence2: using a gasoline engine requires consuming gasoline.

Output: gasoline


Input:
Sentence1: using a gasoline engine requires burning gasoline.
Sentence2: using a gasoline engine requires consuming gasoline.

Output: requires


Input:
Sentence1: Aquatic ecosystems can be classified as freshwater or marine .
Sentence2: Algae play significant roles in freshwater and marine environments.

Output: freshwater


Input:
Sentence1: Aquatic ecosystems can be classified as freshwater or marine .
Sentence2: Algae play significant roles in freshwater and marine environments.

Output: marine


Input:
Sentence1: Species are the different kinds of organisms.
Sentence2: Macroevolution is evolution over geologic time above the level of the kind of organism.

Output: organisms


Input:
Sentence1: Mollusks are a major food source for other organisms, including humans.
Sentence2: Soft-bodied invertebrates are a major food source for other organisms, including humans.

Output: food


Input:
Sentence1: Mollusks are a major food source for other organisms, including humans.
Sentence2: Soft-bodied invertebrates are a major food source for other organisms, including humans.

Output: humans


Input:
Sentence1: Mollusks are a major food source for other organisms, including humans.
Sentence2: Soft-bodied invertebrates are a major food source for other organisms, including humans.

Output: including


Input:
Sentence1: Mollusks are a major food source for other organisms, including humans.
Sentence2: Soft-bodied invertebrates are a major food source for other organisms, including humans.

Output: major


Input:
Sentence1: Mollusks are a major food source for other organisms, including humans.
Sentence2: Soft-bodied invertebrates are a major food source for other organisms, including humans.

Output: organisms


Input:
Sentence1: Mollusks are a major food source for other organisms, including humans.
Sentence2: Soft-bodied invertebrates are a major food source for other organisms, including humans.

Output: other


Input:
Sentence1: Mollusks are a major food source for other organisms, including humans.
Sentence2: Soft-bodied invertebrates are a major food source for other organisms, including humans.

Output: source


Input:
Sentence1: Propane can be either a liquid or a gas.
Sentence2: heat can be added to propane to change it's properties through the boiling process.

Output: Propane


Input:
Sentence1: the volume of an object can be used to describe the size of that object.
Sentence2: Primary among the stolen objects are three large crystal balls.

Output: object


Input:
Sentence1: Puppies as well as kittens are curious animals.
Sentence2: Kittens can learn behavior through play.

Output: kittens


Input:
Sentence1: Some mollusks are nearly microscopic.
Sentence2: Invisible to the naked eye, the damage is detectable by microscope.

Output: microscopic


Input:
Sentence1: the sun causes water to evaporate more quickly by adding heat.
Sentence2: During the summer the sun gets much higher and provides more direct, concentrated heating.

Output: heat


Input:
Sentence1: the sun causes water to evaporate more quickly by adding heat.
Sentence2: During the summer the sun gets much higher and provides more direct, concentrated heating.

Output: sun


Input:
Sentence1: Bamboos are vigorous, rugged plants.
Sentence2: bamboo exhibits phototropism.

Output: Bamboos


Input:
Sentence1: All plants have a characteristic life cycle that includes alternation of generations.
Sentence2: Plant and animal life cycles are detailed, including birth, growth, reproduction, and death.

Output: includes


Input:
Sentence1: if an object reflects light toward the eye then that object can be seen.
Sentence2: Objects are seen by virtue of scattered light.

Output: seen


Input:
Sentence1: Hormones control many cell activities, so they are very important for homeostasis.
Sentence2: Hormones control many cell activities, so they are very important for the chemical equilibrium of the body.

Output: Hormones


Input:
Sentence1: Hormones control many cell activities, so they are very important for homeostasis.
Sentence2: Hormones control many cell activities, so they are very important for the chemical equilibrium of the body.

Output: activities


Input:
Sentence1: Hormones control many cell activities, so they are very important for homeostasis.
Sentence2: Hormones control many cell activities, so they are very important for the chemical equilibrium of the body.

Output: cell


Input:
Sentence1: Hormones control many cell activities, so they are very important for homeostasis.
Sentence2: Hormones control many cell activities, so they are very important for the chemical equilibrium of the body.

Output: control


Input:
Sentence1: Hormones control many cell activities, so they are very important for homeostasis.
Sentence2: Hormones control many cell activities, so they are very important for the chemical equilibrium of the body.

Output: important


Input:
Sentence1: Hormones control many cell activities, so they are very important for homeostasis.
Sentence2: Hormones control many cell activities, so they are very important for the chemical equilibrium of the body.

Output: many


Input:
Sentence1: Hormones control many cell activities, so they are very important for homeostasis.
Sentence2: Hormones control many cell activities, so they are very important for the chemical equilibrium of the body.

Output: very


Input:
Sentence1: skin is used for protecting the body from harmful substances.
Sentence2: Skin is the body's largest organ.

Output: skin


Input:
Sentence1: when a hemisphere is tilted away from the sun , that hemisphere receives less direct sunlight.
Sentence2: Sunlight is delivered in small packets of energy called photons.

Output: sunlight


Input:
Sentence1: powering an electrical device with a battery requires a path for electricity to flow through a closed circuit.
Sentence2: An electrical current is a flow of electrons.

Output: electrical


Input:
Sentence1: powering an electrical device with a battery requires a path for electricity to flow through a closed circuit.
Sentence2: An electrical current is a flow of electrons.

Output: electricity


Input:
Sentence1: Insects spread disease and destroy crops.
Sentence2: Crops are plants that are grown for food or other uses.

Output: crops


Input:
Sentence1: Food provides energy and health.
Sentence2: food provides energy for an organism.

Output: Food


Input:
Sentence1: cell division often causes growth.
Sentence2: Mitosis is cell division.

Output: cell


Input:
Sentence1: cell division often causes growth.
Sentence2: Mitosis is cell division.

Output: division


Input:
Sentence1: Living and surviving are the thing.
Sentence2: An egg requires warmth to live.

Output: Living


Input:
Sentence1: Plants live just about everywhere on Earth.
Sentence2: Most plants are producers.

Output: Plants


Input:
Sentence1: Ions are atoms or groups of atoms that carry a positive or negative electrical charge.
Sentence2: An ion is formed after a neutral atom loses an electron.

Output: Ions


Input:
Sentence1: Cells cannot survive without oxygen.
Sentence2: Cells are aerobic.

Output: Cells


Input:
Sentence1: Arteries generally carry oxygen-rich blood.
Sentence2: Arteries and veins are blood vessels.

Output: Arteries


Input:
Sentence1: Mechanical energy can be changed to electrical energy.
Sentence2: an animal's movement can be changed to electrical energy.

Output: changed


Input:
Sentence1: Mechanical energy can be changed to electrical energy.
Sentence2: an animal's movement can be changed to electrical energy.

Output: electrical


Input:
Sentence1: Mechanical energy can be changed to electrical energy.
Sentence2: an animal's movement can be changed to electrical energy.

Output: energy


Input:
Sentence1: Mechanical energy can be changed to electrical energy.
Sentence2: an animal's movement can be changed to electrical energy.

Output: to


Input:
Sentence1: if all members of a species cannot produce offspring then that species will likely become extinct.
Sentence2: The last dodo birds could not produce offspring.

Output: offspring


Input:
Sentence1: if all members of a species cannot produce offspring then that species will likely become extinct.
Sentence2: The last dodo birds could not produce offspring.

Output: produce


Input:
Sentence1: when the season changes , the amount of daylight will change.
Sentence2: Changing the angle of the sun will change the amount of daylight.

Output: amount


Input:
Sentence1: when the season changes , the amount of daylight will change.
Sentence2: Changing the angle of the sun will change the amount of daylight.

Output: change


Input:
Sentence1: when the season changes , the amount of daylight will change.
Sentence2: Changing the angle of the sun will change the amount of daylight.

Output: daylight


Input:
Sentence1: webbed feet are used for moving faster through water by aquatic animals.
Sentence2: Feet designed for swimming are used for moving faster through water.

Output: faster


Input:
Sentence1: webbed feet are used for moving faster through water by aquatic animals.
Sentence2: Feet designed for swimming are used for moving faster through water.

Output: moving


Input:
Sentence1: webbed feet are used for moving faster through water by aquatic animals.
Sentence2: Feet designed for swimming are used for moving faster through water.

Output: through


Input:
Sentence1: webbed feet are used for moving faster through water by aquatic animals.
Sentence2: Feet designed for swimming are used for moving faster through water.

Output: water


Input:
Sentence1: Time is measured using hours, seconds, and minutes.
Sentence2: A watch measures hours, seconds, and minutes.

Output: hours


Input:
Sentence1: Time is measured using hours, seconds, and minutes.
Sentence2: A watch measures hours, seconds, and minutes.

Output: minutes


Input:
Sentence1: Time is measured using hours, seconds, and minutes.
Sentence2: A watch measures hours, seconds, and minutes.

Output: seconds


Input:
Sentence1: Capillaries are microscopic vessels.
Sentence2: Lymph is a fluid that leaks out of microscopic vessels into spaces between cells.

Output: microscopic


Input:
Sentence1: Capillaries are microscopic vessels.
Sentence2: Lymph is a fluid that leaks out of microscopic vessels into spaces between cells.

Output: vessels


Input:
Sentence1: measuring the hardness of minerals requires scratching those materials.
Sentence2: measuring diamonds requires scratching them.

Output: measuring


Input:
Sentence1: measuring the hardness of minerals requires scratching those materials.
Sentence2: measuring diamonds requires scratching them.

Output: requires


Input:
Sentence1: measuring the hardness of minerals requires scratching those materials.
Sentence2: measuring diamonds requires scratching them.

Output: scratching


Input:
Sentence1: Antigens are found on cancer cells and the cells of transplanted organs.
Sentence2: Examples of animal organs are kidneys and hearts.

Output: organs


Input:
Sentence1: Condensing is a gas turning into a liquid.
Sentence2: condensation alters a gas.

Output: gas


Input:
Sentence1: Most people know that the Venus Flytrap is a carnivorous plant.
Sentence2: The Venus Flytrap has specialized reproductive organs.

Output: Flytrap


Input:
Sentence1: Most people know that the Venus Flytrap is a carnivorous plant.
Sentence2: The Venus Flytrap has specialized reproductive organs.

Output: Venus


Input:
Sentence1: Heterotrophs are living things that cannot make their own food.
Sentence2: animals cannot make their own food.

Output: cannot


Input:
Sentence1: Heterotrophs are living things that cannot make their own food.
Sentence2: animals cannot make their own food.

Output: food


Input:
Sentence1: Heterotrophs are living things that cannot make their own food.
Sentence2: animals cannot make their own food.

Output: make


Input:
Sentence1: Heterotrophs are living things that cannot make their own food.
Sentence2: animals cannot make their own food.

Output: own


Input:
Sentence1: Heterotrophs are living things that cannot make their own food.
Sentence2: animals cannot make their own food.

Output: their


Input:
Sentence1: a car engine usually converts gasoline into motion and heat through combustion.
Sentence2: Car engines convert gasoline into friction.

Output: car


Input:
Sentence1: a car engine usually converts gasoline into motion and heat through combustion.
Sentence2: Car engines convert gasoline into friction.

Output: converts


Input:
Sentence1: a car engine usually converts gasoline into motion and heat through combustion.
Sentence2: Car engines convert gasoline into friction.

Output: engine


Input:
Sentence1: a car engine usually converts gasoline into motion and heat through combustion.
Sentence2: Car engines convert gasoline into friction.

Output: gasoline


Input:
Sentence1: Marine species live mainly in shallow coastal waters.
Sentence2: Brachiopods are strictly marine and are usually found in shallow seas.

Output: Marine


Input:
Sentence1: Ethologists study animal behavior.
Sentence2: animal behaviorists study animals in their natural environment.

Output: animal


Input:
Sentence1: Ethologists study animal behavior.
Sentence2: animal behaviorists study animals in their natural environment.

Output: behavior


Input:
Sentence1: Helper T Cells Helper T cells are the brains behind immune response.
Sentence2: HIV infects and destroys part of the immune response.

Output: immune


Input:
Sentence1: Helper T Cells Helper T cells are the brains behind immune response.
Sentence2: HIV infects and destroys part of the immune response.

Output: response


Input:
Sentence1: Insulin is a hormone that helps cells absorb sugar from the blood.
Sentence2: the pancreas produces a hormone that helps cells absorb sugar from the blood.

Output: absorb


Input:
Sentence1: Insulin is a hormone that helps cells absorb sugar from the blood.
Sentence2: the pancreas produces a hormone that helps cells absorb sugar from the blood.

Output: blood


Input:
Sentence1: Insulin is a hormone that helps cells absorb sugar from the blood.
Sentence2: the pancreas produces a hormone that helps cells absorb sugar from the blood.

Output: cells


Input:
Sentence1: Insulin is a hormone that helps cells absorb sugar from the blood.
Sentence2: the pancreas produces a hormone that helps cells absorb sugar from the blood.

Output: from


Input:
Sentence1: Insulin is a hormone that helps cells absorb sugar from the blood.
Sentence2: the pancreas produces a hormone that helps cells absorb sugar from the blood.

Output: helps


Input:
Sentence1: Insulin is a hormone that helps cells absorb sugar from the blood.
Sentence2: the pancreas produces a hormone that helps cells absorb sugar from the blood.

Output: hormone


Input:
Sentence1: Insulin is a hormone that helps cells absorb sugar from the blood.
Sentence2: the pancreas produces a hormone that helps cells absorb sugar from the blood.

Output: sugar


Input:
Sentence1: Bees are naturalized on every continent except Antarctica.
Sentence2: Pollen bees have diversified to occupy all habitats, except underwater and in Antarctica.

Output: Antarctica


Input:
Sentence1: Specific gravity is related to density.
Sentence2: Density determines whether an object will sink or float.

Output: density


Input:
Sentence1: ice wedging is when ice causes rocks to crack by expanding in openings.
Sentence2: Mechanical weathering causes rocks to crack.

Output: crack


Input:
Sentence1: ice wedging is when ice causes rocks to crack by expanding in openings.
Sentence2: Mechanical weathering causes rocks to crack.

Output: rocks


Input:
Sentence1: Sunglasses help protect the eyes from glare off the river surfaces.
Sentence2: Sunglasses can protect against looking at bright objects, like glare off the river surfaces.

Output: Sunglasses


Input:
Sentence1: Sunglasses help protect the eyes from glare off the river surfaces.
Sentence2: Sunglasses can protect against looking at bright objects, like glare off the river surfaces.

Output: glare


Input:
Sentence1: Sunglasses help protect the eyes from glare off the river surfaces.
Sentence2: Sunglasses can protect against looking at bright objects, like glare off the river surfaces.

Output: off


Input:
Sentence1: Sunglasses help protect the eyes from glare off the river surfaces.
Sentence2: Sunglasses can protect against looking at bright objects, like glare off the river surfaces.

Output: protect


Input:
Sentence1: Sunglasses help protect the eyes from glare off the river surfaces.
Sentence2: Sunglasses can protect against looking at bright objects, like glare off the river surfaces.

Output: river


Input:
Sentence1: Sunglasses help protect the eyes from glare off the river surfaces.
Sentence2: Sunglasses can protect against looking at bright objects, like glare off the river surfaces.

Output: surfaces


Input:
Sentence1: Sunglasses help protect the eyes from glare off the river surfaces.
Sentence2: Sunglasses can protect against looking at bright objects, like glare off the river surfaces.

Output: the


Input:
Sentence1: heat can change the state of matter.
Sentence2: Heat can change a substance to a liquid.

Output: heat


Input:
Sentence1: a warm front causes cloudy and rainy weather.
Sentence2: stratus clouds are associated with cloudy and rainy weather.

Output: cloudy


Input:
Sentence1: a warm front causes cloudy and rainy weather.
Sentence2: stratus clouds are associated with cloudy and rainy weather.

Output: rainy


Input:
Sentence1: a warm front causes cloudy and rainy weather.
Sentence2: stratus clouds are associated with cloudy and rainy weather.

Output: weather


Input:
Sentence1: Some viruses have an envelope of phospholipids and proteins.
Sentence2: Some viruses make their own membranes.

Output: Some


Input:
Sentence1: Some viruses have an envelope of phospholipids and proteins.
Sentence2: Some viruses make their own membranes.

Output: viruses


Input:
Sentence1: Plants are very easily raised from seed, sown in a cold greenhouse from February to April.
Sentence2: A greenhouse helps plants grow easily protected from chill.

Output: easily


Input:
Sentence1: Some insects can use their antennae to detect sound.
Sentence2: Every insect has six legs, that's an insect.

Output: insects


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

Output: any


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

Output: care


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

Output: little


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

Output: parents


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

Output: provide


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

Output: their


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

Output: young


Input:
Sentence1: Each system is equipped with a control, a heat producer, a heat exchanger, and a heat distributor.
Sentence2: buildings use a combination of production, exchange, and distribution of energy to regulate temperatures.

Output: distributor


Input:
Sentence1: Each system is equipped with a control, a heat producer, a heat exchanger, and a heat distributor.
Sentence2: buildings use a combination of production, exchange, and distribution of energy to regulate temperatures.

Output: exchanger


Input:
Sentence1: Each system is equipped with a control, a heat producer, a heat exchanger, and a heat distributor.
Sentence2: buildings use a combination of production, exchange, and distribution of energy to regulate temperatures.

Output: producer


Input:
Sentence1: After all, seals are mammals just as humans are mammals.
Sentence2: Playing is just one of many ways that humans and other animals learn how to behave.

Output: humans


Input:
Sentence1: Typically, the liquid is water.
Sentence2: condensing causes water to form.

Output: water


Input:
Sentence1: biofuel is used to produce electricity by burning.
Sentence2: Wood and straw are both examples of biofuels.

Output: biofuel


Input:
Sentence1: Fluorescent light bulbs use half the electricity of standard bulbs.
Sentence2: flourescent bulbs use less electric energy.

Output: Fluorescent


Input:
Sentence1: Consumers take in food by eating producers or other living things.
Sentence2: Decomposers produce nutrients for producers.

Output: producers


Input:
Sentence1: Folded mountain ranges are formed by plate tectonics.
Sentence2: the Himalayas were formed by plate tectonics.

Output: plate


Input:
Sentence1: Folded mountain ranges are formed by plate tectonics.
Sentence2: the Himalayas were formed by plate tectonics.

Output: tectonics


Input:
Sentence1: Reptile parents provide little if any care to their young.
Sentence2: Crocodilian mothers are the most attentive reptile parents.

Output: Reptile


Input:
Sentence1: Reptile parents provide little if any care to their young.
Sentence2: Crocodilian mothers are the most attentive reptile parents.

Output: parents


Input:
Sentence1: Truth is the sound of one frog croaking.
Sentence2: Frogs also have a larynx, or voice box, to croak.

Output: croaking


Input:
Sentence1: volcanic ash in the atmosphere decreases the temperature by blocking the sun.
Sentence2: Eruptive products of Hawaiian volcanoes span a wide range of temperatures.

Output: temperature


Input:
Sentence1: Friction occurs when two substances rub together.
Sentence2: two substances rubbing together causes an object to lose energy.

Output: rub


Input:
Sentence1: Friction occurs when two substances rub together.
Sentence2: two substances rubbing together causes an object to lose energy.

Output: substances


Input:
Sentence1: Friction occurs when two substances rub together.
Sentence2: two substances rubbing together causes an object to lose energy.

Output: together


Input:
Sentence1: Playing is just one of many ways that mammals and other animals learn how to behave.
Sentence2: Children learn through play and in other ways.

Output: Playing


Input:
Sentence1: Protozoa make humans sick when they become human parasites.
Sentence2: Malaria parasites are transmitted by mosquitos.

Output: parasites


Input:
Sentence1: Water, for example, is a liquid.
Sentence2: beads of liquid are formed by vapor condensing.

Output: liquid


Input:
Sentence1: lakes are formed by precipitation and runoff.
Sentence2: Snowmelt runoff is a significant source of annual runoff.

Output: runoff


Input:
Sentence1: if an object in a fluid is more dense than that fluid then that object will sink in that fluid because of gravity.
Sentence2: Most seeds are more dense than water.

Output: dense


Input:
Sentence1: if an object in a fluid is more dense than that fluid then that object will sink in that fluid because of gravity.
Sentence2: Most seeds are more dense than water.

Output: more


Input:
Sentence1: tectonic plates being pushed together causes earthquakes.
Sentence2: San Francisco has tectonic plates.

Output: plates


Input:
Sentence1: tectonic plates being pushed together causes earthquakes.
Sentence2: San Francisco has tectonic plates.

Output: tectonic


Input:
Sentence1: Gunshots startle the quiet.
Sentence2: Gunshots cause loud noises to animals.

Output: Gunshots


Input:
Sentence1: Heat pan, add cooking oil to pan.
Sentence2: cooking oil heats food.

Output: oil


Input:
Sentence1: Vertebrate chordates have a backbone.
Sentence2: Yep, lizards are chordates, just like humans.

Output: chordates


Input:
Sentence1: Fruit browning is believed to be a process of early cell aging and death.
Sentence2: Fruit browning is associated with aging.

Output: Fruit


Input:
Sentence1: Fruit browning is believed to be a process of early cell aging and death.
Sentence2: Fruit browning is associated with aging.

Output: browning


Input:
Sentence1: Desertifcation can be caused by overgrazing, soil erosion, prolonged drought, or climate change.
Sentence2: being exposed to wind can cause Desertifcation.

Output: Desertifcation


Input:
Sentence1: Echinoderms lack respiratory and excretory systems.
Sentence2: echinoderms can't contract influenza.

Output: Echinoderms


Input:
Sentence1: Thyroxine, a thyroid hormone, is an aryl iodide.
Sentence2: Thyroxine increases the rate of metabolism in cells throughout the body.

Output: Thyroxine


Input:
Sentence1: Most carcinogens cause cancer by producing mutations in DNA.
Sentence2: Asbestos causes cancer.

Output: cancer


Input:
Sentence1: Viruses Viruses are the simplest organisms known.
Sentence2: the simplest known organisms often infect bacteria.

Output: known


Input:
Sentence1: Viruses Viruses are the simplest organisms known.
Sentence2: the simplest known organisms often infect bacteria.

Output: organisms


Input:
Sentence1: Viruses Viruses are the simplest organisms known.
Sentence2: the simplest known organisms often infect bacteria.

Output: simplest


Input:
Sentence1: Climate is the average weather in an area over a long period of time.
Sentence2: Climate is the average of things like rain or sun shine  in an area over a long period of time.

Output: Climate


Input:
Sentence1: Climate is the average weather in an area over a long period of time.
Sentence2: Climate is the average of things like rain or sun shine  in an area over a long period of time.

Output: area


Input:
Sentence1: Climate is the average weather in an area over a long period of time.
Sentence2: Climate is the average of things like rain or sun shine  in an area over a long period of time.

Output: average


Input:
Sentence1: Climate is the average weather in an area over a long period of time.
Sentence2: Climate is the average of things like rain or sun shine  in an area over a long period of time.

Output: long


Input:
Sentence1: Climate is the average weather in an area over a long period of time.
Sentence2: Climate is the average of things like rain or sun shine  in an area over a long period of time.

Output: over


Input:
Sentence1: Climate is the average weather in an area over a long period of time.
Sentence2: Climate is the average of things like rain or sun shine  in an area over a long period of time.

Output: period


Input:
Sentence1: Climate is the average weather in an area over a long period of time.
Sentence2: Climate is the average of things like rain or sun shine  in an area over a long period of time.

Output: time


Input:
Sentence1: Milk is a nutritious fluid.
Sentence2: Milk shakes have milk.

Output: Milk


Input:
Sentence1: Many plants respond to the days growing shorter in the fall by going dormant.
Sentence2: Chocolate plant goes dormant and disappears in winter.

Output: plants


Input:
Sentence1: If the egg is fertilized, it can implant in the uterus and cause pregnancy.
Sentence2: pregnancy occurs when sperm swim to an egg inside an archegonium.

Output: pregnancy


Input:
Sentence1: Diversity is a matter of survival and prosperity.
Sentence2: A plant requires food for diversity and prosperity.

Output: Diversity


Input:
Sentence1: Diversity is a matter of survival and prosperity.
Sentence2: A plant requires food for diversity and prosperity.

Output: prosperity


Input:
Sentence1: electricity is used as an energy source by electrical devices.
Sentence2: Devices such as pagers and cell phones are forbidden.

Output: devices


Input:
Sentence1: Starfish and sea urchins are also echinoderms.
Sentence2: Sea urchins lack a centralized nervous system.

Output: sea


Input:
Sentence1: Starfish and sea urchins are also echinoderms.
Sentence2: Sea urchins lack a centralized nervous system.

Output: urchins


Input:
Sentence1: Sperm had to swim from male to female reproductive organs for fertilization.
Sentence2: Organism development starts with egg fertilization in female organs.

Output: female


Input:
Sentence1: Sperm had to swim from male to female reproductive organs for fertilization.
Sentence2: Organism development starts with egg fertilization in female organs.

Output: organs


Input:
Sentence1: Lung cancer is most often caused by exposure to tobacco smoke.
Sentence2: Secondhand smoke is also known as Environmental Tobacco Smoke.

Output: tobacco


Input:
Sentence1: if fossils of a water animal or plant are found in a place then that place used to be covered by water in the past.
Sentence2: Most fossils are formed when sediment is deposited by wind or water.

Output: water


Input:
Sentence1: Yet most consumers are unaware that they are endangering species in the wild.
Sentence2: Most organisms are endangering species in the wild.

Output: endangering


Input:
Sentence1: breaking apart rocks can cause debris.
Sentence2: Breaking apart rocks can cause sediment.

Output: apart


Input:
Sentence1: breaking apart rocks can cause debris.
Sentence2: Breaking apart rocks can cause sediment.

Output: breaking


Input:
Sentence1: breaking apart rocks can cause debris.
Sentence2: Breaking apart rocks can cause sediment.

Output: rocks


Input:
Sentence1: a watch is used for measuring time.
Sentence2: A watch can be used to measure your commute.

Output: used


Input:
Sentence1: a watch is used for measuring time.
Sentence2: A watch can be used to measure your commute.

Output: watch


Input:
Sentence1: Animals are a kingdom of multicellular eukaryotes.
Sentence2: Horses are domestic animals.

Output: Animals


Input:
Sentence1: claws are used to catch prey by some predators.
Sentence2: Many animals which are complete or partial vegetarians have sharp teeth and claws.

Output: claws


Input:
Sentence1: a long tail can be used to move through water by an animal.
Sentence2: Sharks move through the water with their tail.

Output: move


Input:
Sentence1: the Earth revolving around the Sun causes the seasons to change on its axis.
Sentence2: Earth's orbital motion around the sun is key to the leaves of many trees changing colors.

Output: Earth


Input:
Sentence1: the Earth revolving around the Sun causes the seasons to change on its axis.
Sentence2: Earth's orbital motion around the sun is key to the leaves of many trees changing colors.

Output: Sun


Input:
Sentence1: the Earth revolving around the Sun causes the seasons to change on its axis.
Sentence2: Earth's orbital motion around the sun is key to the leaves of many trees changing colors.

Output: around


Input:
Sentence1: Creature Comforts A habitat is an animal's home.
Sentence2: Destruction of an animal's home causes animals to move to find shelter in another home.

Output: animal's


Input:
Sentence1: Creature Comforts A habitat is an animal's home.
Sentence2: Destruction of an animal's home causes animals to move to find shelter in another home.

Output: home


Input:
Sentence1: Ice wedging is the most important form of mechanical weathering.
Sentence2: Cycles of freezing and thawing water cause mechanical weathering.

Output: mechanical


Input:
Sentence1: Ice wedging is the most important form of mechanical weathering.
Sentence2: Cycles of freezing and thawing water cause mechanical weathering.

Output: weathering


Input:
Sentence1: the Earth being tilted on its axis causes ones side of the Earth to receive less energy from the Sun than the other side.
Sentence2: Seasons result from variations in the amount of the sun's energy hitting the surface.

Output: Sun


Input:
Sentence1: the Earth being tilted on its axis causes ones side of the Earth to receive less energy from the Sun than the other side.
Sentence2: Seasons result from variations in the amount of the sun's energy hitting the surface.

Output: energy


Input:
Sentence1: Vertebrate chordates have a backbone.
Sentence2: Birds are a class of the chordates or vertebrate phylum.

Output: Vertebrate


Input:
Sentence1: Vertebrate chordates have a backbone.
Sentence2: Birds are a class of the chordates or vertebrate phylum.

Output: chordates


Input:
Sentence1: All plants are eukaryotes.
Sentence2: plants and animals are multicellular.

Output: plants


Input:
Sentence1: Viruses contain DNA but not much else.
Sentence2: smallpox contains DNA but not much else.

Output: DNA


Input:
Sentence1: Viruses contain DNA but not much else.
Sentence2: smallpox contains DNA but not much else.

Output: contain


Input:
Sentence1: Viruses contain DNA but not much else.
Sentence2: smallpox contains DNA but not much else.

Output: else


Input:
Sentence1: Viruses contain DNA but not much else.
Sentence2: smallpox contains DNA but not much else.

Output: much


Input:
Sentence1: Viruses contain DNA but not much else.
Sentence2: smallpox contains DNA but not much else.

Output: not


Input:
Sentence1: Water in the rocks pushes out when it freezes thus causing the rocks to break.
Sentence2: frozen water breaks rock.

Output: rocks


Input:
Sentence1: Some species of reptiles can go several weeks between meals.
Sentence2: Reptiles lay eggs protected by leathery shells.

Output: reptiles


Input:
Sentence1: Many plants respond to the days growing shorter in the fall by going dormant.
Sentence2: Many plants are in a dormant state in winter.

Output: plants


Input:
Sentence1: Roots grow in length and width from primary and secondary meristem.
Sentence2: Roots grow in length and width from both roots and shoots.

Output: Roots


Input:
Sentence1: Roots grow in length and width from primary and secondary meristem.
Sentence2: Roots grow in length and width from both roots and shoots.

Output: grow


Input:
Sentence1: Roots grow in length and width from primary and secondary meristem.
Sentence2: Roots grow in length and width from both roots and shoots.

Output: length


Input:
Sentence1: Roots grow in length and width from primary and secondary meristem.
Sentence2: Roots grow in length and width from both roots and shoots.

Output: width


Input:
Sentence1: Some arthropods have special excretory structures.
Sentence2: Crustaceans are, like insects, arthropods.

Output: arthropods


Input:
Sentence1: Small temperature variations can have major effects on natural ecosystems.
Sentence2: volcanic ash in the atmosphere can have major effects on natural ecosystems.

Output: ecosystems


Input:
Sentence1: Small temperature variations can have major effects on natural ecosystems.
Sentence2: volcanic ash in the atmosphere can have major effects on natural ecosystems.

Output: effects


Input:
Sentence1: Small temperature variations can have major effects on natural ecosystems.
Sentence2: volcanic ash in the atmosphere can have major effects on natural ecosystems.

Output: major


Input:
Sentence1: Small temperature variations can have major effects on natural ecosystems.
Sentence2: volcanic ash in the atmosphere can have major effects on natural ecosystems.

Output: natural


Input:
Sentence1: Bird beaks are generally adapted for the food they eat.
Sentence2: Birds eat food that they scavenge.

Output: Bird


Input:
Sentence1: Bird beaks are generally adapted for the food they eat.
Sentence2: Birds eat food that they scavenge.

Output: eat


Input:
Sentence1: Chromoplasts make and store pigments.
Sentence2: chromoplasts make and store permanent colors.

Output: Chromoplasts


Input:
Sentence1: Chromoplasts make and store pigments.
Sentence2: chromoplasts make and store permanent colors.

Output: make


Input:
Sentence1: Chromoplasts make and store pigments.
Sentence2: chromoplasts make and store permanent colors.

Output: store


Input:
Sentence1: Macroevolution is evolution over geologic time above the level of the species.
Sentence2: Sometimes, an isolated fossil is held up as evidence of macroevolution.

Output: Macroevolution


Input:
Sentence1: Farmers grow substance crops to feed their family as well as to sell for cash.
Sentence2: Insects spread disease and destroy farmer's ability to feed their family.

Output: Farmers


Input:
Sentence1: Farmers grow substance crops to feed their family as well as to sell for cash.
Sentence2: Insects spread disease and destroy farmer's ability to feed their family.

Output: family


Input:
Sentence1: Farmers grow substance crops to feed their family as well as to sell for cash.
Sentence2: Insects spread disease and destroy farmer's ability to feed their family.

Output: feed


Input:
Sentence1: a wildfire changes an ecosystem drastically.
Sentence2: a wildfire changes a forest drastically.

Output: changes


Input:
Sentence1: a wildfire changes an ecosystem drastically.
Sentence2: a wildfire changes a forest drastically.

Output: drastically


Input:
Sentence1: a wildfire changes an ecosystem drastically.
Sentence2: a wildfire changes a forest drastically.

Output: wildfire


Input:
Sentence1: a scale is used for measuring weight.
Sentence2: All weights are in grams.

Output: weight


Input:
Sentence1: Lymph is a fluid that leaks out of capillaries into spaces between cells.
Sentence2: Lymph is a fluid that leaks out of the connection of arteries to veins.

Output: Lymph


Input:
Sentence1: Lymph is a fluid that leaks out of capillaries into spaces between cells.
Sentence2: Lymph is a fluid that leaks out of the connection of arteries to veins.

Output: fluid


Input:
Sentence1: Lymph is a fluid that leaks out of capillaries into spaces between cells.
Sentence2: Lymph is a fluid that leaks out of the connection of arteries to veins.

Output: leaks


Input:
Sentence1: Lymph is a fluid that leaks out of capillaries into spaces between cells.
Sentence2: Lymph is a fluid that leaks out of the connection of arteries to veins.

Output: out


Input:
Sentence1: Fish include bass, crappie, and catfish.
Sentence2: crappie have a centralized nervous system with a brain.

Output: crappie


Input:
Sentence1: Lake Trout Lake Trout fishing is good in Loonhaunt and Pipestone Lakes.
Sentence2: Loonhaunt is generally bigger and deeper than ponds.

Output: Loonhaunt


Input:
Sentence1: eating something that contains pollutants has a negative impact on an organism 's survival.
Sentence2: Lastly, dolphins are intelligent organisms.

Output: organism


Input:
Sentence1: poison causes harm to living things.
Sentence2: Poison causes things to die and quickly decay.

Output: causes


Input:
Sentence1: poison causes harm to living things.
Sentence2: Poison causes things to die and quickly decay.

Output: poison


Input:
Sentence1: poison causes harm to living things.
Sentence2: Poison causes things to die and quickly decay.

Output: things


Input:
Sentence1: propulsion is used for flying by a spacecraft.
Sentence2: Jets are used for flying by spacecraft.

Output: flying


Input:
Sentence1: propulsion is used for flying by a spacecraft.
Sentence2: Jets are used for flying by spacecraft.

Output: spacecraft


Input:
Sentence1: propulsion is used for flying by a spacecraft.
Sentence2: Jets are used for flying by spacecraft.

Output: used


Input:
Sentence1: All plants have a characteristic life cycle that includes alternation of generations.
Sentence2: bamboo has  a characteristic life cycle that includes alternation of generations.

Output: alternation


Input:
Sentence1: All plants have a characteristic life cycle that includes alternation of generations.
Sentence2: bamboo has  a characteristic life cycle that includes alternation of generations.

Output: characteristic


Input:
Sentence1: All plants have a characteristic life cycle that includes alternation of generations.
Sentence2: bamboo has  a characteristic life cycle that includes alternation of generations.

Output: cycle


Input:
Sentence1: All plants have a characteristic life cycle that includes alternation of generations.
Sentence2: bamboo has  a characteristic life cycle that includes alternation of generations.

Output: generations


Input:
Sentence1: All plants have a characteristic life cycle that includes alternation of generations.
Sentence2: bamboo has  a characteristic life cycle that includes alternation of generations.

Output: includes


Input:
Sentence1: All plants have a characteristic life cycle that includes alternation of generations.
Sentence2: bamboo has  a characteristic life cycle that includes alternation of generations.

Output: life


Input:
Sentence1: an incandescent light bulb converts electricity into light by sending electricity through a filament.
Sentence2: most yard lamps convert electricity to light using a filament.

Output: converts


Input:
Sentence1: an incandescent light bulb converts electricity into light by sending electricity through a filament.
Sentence2: most yard lamps convert electricity to light using a filament.

Output: electricity


Input:
Sentence1: an incandescent light bulb converts electricity into light by sending electricity through a filament.
Sentence2: most yard lamps convert electricity to light using a filament.

Output: filament


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

Output: compete


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

Output: food


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

Output: mates


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

Output: territory


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

Output: water


Input:
Sentence1: Microorganisms associated with foods.
Sentence2: Food can cause infections.

Output: foods


Input:
Sentence1: Prairie dogs live in underground burrows.
Sentence2: Prairie dogs are protected from a wild fire.

Output: Prairie


Input:
Sentence1: Prairie dogs live in underground burrows.
Sentence2: Prairie dogs are protected from a wild fire.

Output: dogs


Input:
Sentence1: Antibiotics Chlamydial infections are treated with an antibiotic.
Sentence2: Something that can treat Chlamydial infections have no effect on viruses.

Output: Chlamydial


Input:
Sentence1: Antibiotics Chlamydial infections are treated with an antibiotic.
Sentence2: Something that can treat Chlamydial infections have no effect on viruses.

Output: infections


Input:
Sentence1: Antibiotics Chlamydial infections are treated with an antibiotic.
Sentence2: Something that can treat Chlamydial infections have no effect on viruses.

Output: treated


Input:
Sentence1: Rivers are usually larger than streams.
Sentence2: Snows melt and replenish the rivers and lakes.

Output: Rivers


Input:
Sentence1: a circle graph can be used to display percents.
Sentence2: A circle graph can be used to display data values.

Output: a


Input:
Sentence1: a circle graph can be used to display percents.
Sentence2: A circle graph can be used to display data values.

Output: be


Input:
Sentence1: a circle graph can be used to display percents.
Sentence2: A circle graph can be used to display data values.

Output: can


Input:
Sentence1: a circle graph can be used to display percents.
Sentence2: A circle graph can be used to display data values.

Output: circle


Input:
Sentence1: a circle graph can be used to display percents.
Sentence2: A circle graph can be used to display data values.

Output: display


Input:
Sentence1: a circle graph can be used to display percents.
Sentence2: A circle graph can be used to display data values.

Output: graph


Input:
Sentence1: a circle graph can be used to display percents.
Sentence2: A circle graph can be used to display data values.

Output: to


Input:
Sentence1: a circle graph can be used to display percents.
Sentence2: A circle graph can be used to display data values.

Output: used


Input:
Sentence1: P16 is a regulator of the cell division cycle.
Sentence2: Cancer is a disease that occurs when genes like P16 stop functioning properly.

Output: P16


Input:
Sentence1: Particles have mass, but mass is energy.
Sentence2: Phase changes do not change energy contained in the matter.

Output: energy


Input:
Sentence1: travelling requires navigation.
Sentence2: Navigation takes a bit of getting used to.

Output: navigation


Input:
Sentence1: If there is an increase in UV radiation, the risks go up for all types of skin cancer.
Sentence2: Ozone depletion increases the risks for all types of skin cancer.

Output: all


Input:
Sentence1: If there is an increase in UV radiation, the risks go up for all types of skin cancer.
Sentence2: Ozone depletion increases the risks for all types of skin cancer.

Output: cancer


Input:
Sentence1: If there is an increase in UV radiation, the risks go up for all types of skin cancer.
Sentence2: Ozone depletion increases the risks for all types of skin cancer.

Output: risks


Input:
Sentence1: If there is an increase in UV radiation, the risks go up for all types of skin cancer.
Sentence2: Ozone depletion increases the risks for all types of skin cancer.

Output: skin


Input:
Sentence1: If there is an increase in UV radiation, the risks go up for all types of skin cancer.
Sentence2: Ozone depletion increases the risks for all types of skin cancer.

Output: types


Input:
Sentence1: Hibernation occurs at the larval stage.
Sentence2: Most species go through the stage where hibernation occurs after hatching.

Output: Hibernation


Input:
Sentence1: Hibernation occurs at the larval stage.
Sentence2: Most species go through the stage where hibernation occurs after hatching.

Output: occurs


Input:
Sentence1: zinc has a positive impact on the healing of wounds.
Sentence2: A healing mineral has a positive impact on wounds.

Output: impact


Input:
Sentence1: zinc has a positive impact on the healing of wounds.
Sentence2: A healing mineral has a positive impact on wounds.

Output: positive


Input:
Sentence1: zinc has a positive impact on the healing of wounds.
Sentence2: A healing mineral has a positive impact on wounds.

Output: wounds


Input:
Sentence1: wind causes erosion.
Sentence2: Wind can severely damage soils and crops.

Output: wind


Input:
Sentence1: Soils are sand, clay, limestone, and organic deposits.
Sentence2: Soil, sand, clay and limestone can form stalactites.

Output: Soils


Input:
Sentence1: Soils are sand, clay, limestone, and organic deposits.
Sentence2: Soil, sand, clay and limestone can form stalactites.

Output: clay


Input:
Sentence1: Soils are sand, clay, limestone, and organic deposits.
Sentence2: Soil, sand, clay and limestone can form stalactites.

Output: limestone


Input:
Sentence1: Soils are sand, clay, limestone, and organic deposits.
Sentence2: Soil, sand, clay and limestone can form stalactites.

Output: sand


Input:
Sentence1: glass cause refraction of light.
Sentence2: glass causes bending of light rays.

Output: cause


Input:
Sentence1: glass cause refraction of light.
Sentence2: glass causes bending of light rays.

Output: glass


Input:
Sentence1: DNA contains genetic instructions for proteins, and RNA helps assemble the proteins.
Sentence2: DNA acts as the store of genetic information.

Output: genetic


Input:
Sentence1: Speciation is an extension of evolution.
Sentence2: speciation occurs in response to a change in the environment.

Output: Speciation


Input:
Sentence1: Secondary growth forms secondary vascular tissues and bark.
Sentence2: Dead or missing bark indicates loss of actively growing vascular tissue.

Output: tissues


Input:
Sentence1: Secondary growth forms secondary vascular tissues and bark.
Sentence2: Dead or missing bark indicates loss of actively growing vascular tissue.

Output: vascular


Input:
Sentence1: Pregnancy is the carrying of one or more offspring from fertilization until birth.
Sentence2: An elephant carries their offspring from fertilization until birth, 22 months later.

Output: fertilization


Input:
Sentence1: Sexual reproduction involves sperm and an egg.
Sentence2: adult sponges reproduce sexually.

Output: Sexual


Input:
Sentence1: Sexual reproduction involves sperm and an egg.
Sentence2: adult sponges reproduce sexually.

Output: reproduction


Input:
Sentence1: When it rains, the roots absorb water quickly and the plants store the water in the stems.
Sentence2: Some plants store water after absorbing it with the roots.

Output: absorb


Input:
Sentence1: When it rains, the roots absorb water quickly and the plants store the water in the stems.
Sentence2: Some plants store water after absorbing it with the roots.

Output: roots


Input:
Sentence1: Modern Seismograph John Milne was the English seismologist and geologist who invented the first modern seismograph and promoted the building of seismological stations.
Sentence2: An invention by John Milne is used for measuring the size of an earthquake.

Output: John


Input:
Sentence1: Modern Seismograph John Milne was the English seismologist and geologist who invented the first modern seismograph and promoted the building of seismological stations.
Sentence2: An invention by John Milne is used for measuring the size of an earthquake.

Output: Milne


Input:
Sentence1: Modern Seismograph John Milne was the English seismologist and geologist who invented the first modern seismograph and promoted the building of seismological stations.
Sentence2: An invention by John Milne is used for measuring the size of an earthquake.

Output: invented


Input:
Sentence1: Some viruses can cause cancer.
Sentence2: Cancer requires an accumulation of mutations.

Output: cancer


Input:
Sentence1: Fertilization occurs when sperm swim to an egg inside an archegonium.
Sentence2: Male gametes are sperm.

Output: sperm


Input:
Sentence1: most canyons are formed by flowing rivers through erosion over long periods of time.
Sentence2: Canyons reveal the geologic history of the area.

Output: canyons


Input:
Sentence1: Pepper is a seed from a plant.
Sentence2: pepper can wait to germinate until conditions are favorable for growth.

Output: Pepper


Input:
Sentence1: pathogens can cause disease.
Sentence2: If the parasite causes harm, it is a pathogen.

Output: pathogens


Input:
Sentence1: Plants exhibit phototropism, or growing toward a light source.
Sentence2: legumes grow towards a light source.

Output: growing


Input:
Sentence1: Plants exhibit phototropism, or growing toward a light source.
Sentence2: legumes grow towards a light source.

Output: light


Input:
Sentence1: Plants exhibit phototropism, or growing toward a light source.
Sentence2: legumes grow towards a light source.

Output: source


Input:
Sentence1: Plants exhibit phototropism, or growing toward a light source.
Sentence2: legumes grow towards a light source.

Output: toward


Input:
Sentence1: Amphibians are the first true tetrapods, or vertebrates with four limbs.
Sentence2: Animals in the frog family are the first true tetrapods.

Output: first


Input:
Sentence1: Amphibians are the first true tetrapods, or vertebrates with four limbs.
Sentence2: Animals in the frog family are the first true tetrapods.

Output: tetrapods


Input:
Sentence1: Amphibians are the first true tetrapods, or vertebrates with four limbs.
Sentence2: Animals in the frog family are the first true tetrapods.

Output: true


Input:
Sentence1: Jaws make cartilaginous fish excellent predators.
Sentence2: Sharks, rays, and skates are cartilaginous.

Output: cartilaginous


Input:
Sentence1: For example, Samsung sells a cell phone that supports voice dialing.
Sentence2: Samsung can cause people to become distracted.

Output: Samsung


Input:
Sentence1: All cells share some of the same structures and basic functions.
Sentence2: Inside the cell is a structure called the nucleus.

Output: cells


Input:
Sentence1: All cells share some of the same structures and basic functions.
Sentence2: Inside the cell is a structure called the nucleus.

Output: structures


Input:
Sentence1: Wind can cause damage to buildings and bring down power lines.
Sentence2: uneven heating of the earth's surface can cause damage to buildings.

Output: buildings


Input:
Sentence1: Wind can cause damage to buildings and bring down power lines.
Sentence2: uneven heating of the earth's surface can cause damage to buildings.

Output: cause


Input:
Sentence1: Wind can cause damage to buildings and bring down power lines.
Sentence2: uneven heating of the earth's surface can cause damage to buildings.

Output: damage


Input:
Sentence1: Among mollusks, the golden snail is a survivalist.
Sentence2: Most snails have shells.

Output: snail


Input:
Sentence1: plant requires seed dispersal for reproduction.
Sentence2: plants require fruits for reproduction.

Output: plant


Input:
Sentence1: plant requires seed dispersal for reproduction.
Sentence2: plants require fruits for reproduction.

Output: reproduction


Input:
Sentence1: plant requires seed dispersal for reproduction.
Sentence2: plants require fruits for reproduction.

Output: requires


Input:
Sentence1: Growth usually ceases with puberty.
Sentence2: Growth usually ceases when humans become sexually mature.

Output: Growth


Input:
Sentence1: Growth usually ceases with puberty.
Sentence2: Growth usually ceases when humans become sexually mature.

Output: ceases


Input:
Sentence1: Growth usually ceases with puberty.
Sentence2: Growth usually ceases when humans become sexually mature.

Output: usually


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

Output: Populations


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

Output: because


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

Output: division


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

Output: do


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

Output: grow


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

Output: not


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

Output: through


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

Output: viruses


Input:
Sentence1: Also organic matter is acidic.
Sentence2: decomposition increases amount of acid. in soil.

Output: acidic


Input:
Sentence1: Viruses infect and live inside the cells of living organisms.
Sentence2: viruses infect and live inside the cells of life.

Output: Viruses


Input:
Sentence1: Viruses infect and live inside the cells of living organisms.
Sentence2: viruses infect and live inside the cells of life.

Output: cells


Input:
Sentence1: Viruses infect and live inside the cells of living organisms.
Sentence2: viruses infect and live inside the cells of life.

Output: infect


Input:
Sentence1: Viruses infect and live inside the cells of living organisms.
Sentence2: viruses infect and live inside the cells of life.

Output: inside


Input:
Sentence1: Viruses infect and live inside the cells of living organisms.
Sentence2: viruses infect and live inside the cells of life.

Output: live


Input:
Sentence1: Genes that are located on the same chromosome are called linked genes.
Sentence2: For example, epilepsy and splay leg tend to link with the vienna white gene.

Output: genes


Input:
Sentence1: Genes that are located on the same chromosome are called linked genes.
Sentence2: For example, epilepsy and splay leg tend to link with the vienna white gene.

Output: linked


Input:
Sentence1: Behaviors that improve fitness increase through natural selection.
Sentence2: Adaptation traits contribute to individual fitness and to the evolution of animal genetic resources.

Output: fitness


Input:
Sentence1: Hurricanes A hurricane is a type of tropical cyclone.
Sentence2: A tropical cyclone can convert heat energy into mechanical energy.

Output: cyclone


Input:
Sentence1: Hurricanes A hurricane is a type of tropical cyclone.
Sentence2: A tropical cyclone can convert heat energy into mechanical energy.

Output: tropical


Input:
Sentence1: sonar is used to find the location of an object.
Sentence2: Surface ships use sonar to locate and track submarines.

Output: location


Input:
Sentence1: Annelids have bodies that are segmented.
Sentence2: The familiar earthworm has a segmented body.

Output: bodies


Input:
Sentence1: Annelids have bodies that are segmented.
Sentence2: The familiar earthworm has a segmented body.

Output: segmented


Input:
Sentence1: Frequency is the measurable rate of that vibration.
Sentence2: hitting an object causes the particles in that object to change frequency.

Output: Frequency


Input:
Sentence1: bacteria can cause people to become ill.
Sentence2: bacteria can cause people to die.

Output: bacteria


Input:
Sentence1: a stove is used for cooking by generating heat.
Sentence2: A stove is used for cooking by heating the air.

Output: cooking


Input:
Sentence1: a stove is used for cooking by generating heat.
Sentence2: A stove is used for cooking by heating the air.

Output: stove


Input:
Sentence1: a stove is used for cooking by generating heat.
Sentence2: A stove is used for cooking by heating the air.

Output: used


Input:
Sentence1: some animals' fur grows thicker for staying warm in the winter.
Sentence2: Mammals are animals that are born with fur or hair.

Output: animals'


Input:
Sentence1: Chordates have a complete digestive system and a closed circulatory system.
Sentence2: All chordates are vertebrates.

Output: Chordates


Input:
Sentence1: Water erosion has similar consequences as wind erosion.
Sentence2: exposure to water can cause erosion.

Output: Water


Input:
Sentence1: Asses are great runners and there is no match in speed and stamina in the entire animal kingdom.
Sentence2: asses require stamina to succeed at running.

Output: Asses


Input:
Sentence1: Asses are great runners and there is no match in speed and stamina in the entire animal kingdom.
Sentence2: asses require stamina to succeed at running.

Output: runners


Input:
Sentence1: Water helps to control the weather and climate.
Sentence2: water is related to climate.

Output: Water


Input:
Sentence1: Immunodeficiency occurs when the immune system is not working properly.
Sentence2: Many cancers can cause immunodeficiency.

Output: Immunodeficiency


Input:
Sentence1: An atmosphere is a layer of gases around a planet or natural satellite .
Sentence2: Weather refers to the conditions of a layer of gases around a planet.

Output: around


Input:
Sentence1: An atmosphere is a layer of gases around a planet or natural satellite .
Sentence2: Weather refers to the conditions of a layer of gases around a planet.

Output: gases


Input:
Sentence1: An atmosphere is a layer of gases around a planet or natural satellite .
Sentence2: Weather refers to the conditions of a layer of gases around a planet.

Output: layer


Input:
Sentence1: An atmosphere is a layer of gases around a planet or natural satellite .
Sentence2: Weather refers to the conditions of a layer of gases around a planet.

Output: planet


Input:
Sentence1: dropping an object into water causes vibrations in the water.
Sentence2: Dropping an object into lake causes vibrations.

Output: dropping


Input:
Sentence1: dropping an object into water causes vibrations in the water.
Sentence2: Dropping an object into lake causes vibrations.

Output: object


Input:
Sentence1: dropping an object into water causes vibrations in the water.
Sentence2: Dropping an object into lake causes vibrations.

Output: vibrations


Input:
Sentence1: cellular respiration is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy.
Sentence2: a series of enzyme-mediated reactions is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy.

Output: carbohydrates


Input:
Sentence1: cellular respiration is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy.
Sentence2: a series of enzyme-mediated reactions is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy.

Output: carbon


Input:
Sentence1: cellular respiration is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy.
Sentence2: a series of enzyme-mediated reactions is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy.

Output: cell


Input:
Sentence1: cellular respiration is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy.
Sentence2: a series of enzyme-mediated reactions is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy.

Output: converts


Input:
Sentence1: cellular respiration is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy.
Sentence2: a series of enzyme-mediated reactions is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy.

Output: dioxide


Input:
Sentence1: cellular respiration is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy.
Sentence2: a series of enzyme-mediated reactions is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy.

Output: energy


Input:
Sentence1: cellular respiration is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy.
Sentence2: a series of enzyme-mediated reactions is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy.

Output: oxygen


Input:
Sentence1: cellular respiration is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy.
Sentence2: a series of enzyme-mediated reactions is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy.

Output: water


Input:
Sentence1: Ribosomes consist of ribosomal RNA and proteins.
Sentence2: ribosomes have RNA.

Output: RNA


Input:
Sentence1: chemical splashing can cause harm to humans.
Sentence2: chemical splashing can cause harm to animals.

Output: cause


Input:
Sentence1: chemical splashing can cause harm to humans.
Sentence2: chemical splashing can cause harm to animals.

Output: chemical


Input:
Sentence1: chemical splashing can cause harm to humans.
Sentence2: chemical splashing can cause harm to animals.

Output: harm


Input:
Sentence1: chemical splashing can cause harm to humans.
Sentence2: chemical splashing can cause harm to animals.

Output: splashing


Input:
Sentence1: After a seed is planted it is watered.
Sentence2: seeds need water.

Output: seed


Input:
Sentence1: Blood type is important for medical reasons.
Sentence2: Blood type is important for some treatments.

Output: Blood


Input:
Sentence1: Blood type is important for medical reasons.
Sentence2: Blood type is important for some treatments.

Output: important


Input:
Sentence1: Blood type is important for medical reasons.
Sentence2: Blood type is important for some treatments.

Output: type


Input:
Sentence1: Energy conservation is an important survival trait.
Sentence2: hibernation is an important survival trait.

Output: survival


Input:
Sentence1: Energy conservation is an important survival trait.
Sentence2: hibernation is an important survival trait.

Output: trait


Input:
Sentence1: magnetism can cause objects to repel each other.
Sentence2: a spinning electron can cause objects to repel each other.

Output: cause


Input:
Sentence1: magnetism can cause objects to repel each other.
Sentence2: a spinning electron can cause objects to repel each other.

Output: objects


Input:
Sentence1: magnetism can cause objects to repel each other.
Sentence2: a spinning electron can cause objects to repel each other.

Output: repel


Input:
Sentence1: a thermometer is used to measure temperature.
Sentence2: Fever is measured using a thermometer.

Output: measure


Input:
Sentence1: a thermometer is used to measure temperature.
Sentence2: Fever is measured using a thermometer.

Output: thermometer


Input:
Sentence1: Snakes are cold-blooded reptiles.
Sentence2: snakes produce amniotic eggs.

Output: Snakes


Input:
Sentence1: Female gametophytes produce eggs inside the ovaries of flowers.
Sentence2: Female gametophytes produce eggs inside the fruit of flowers.

Output: Female


Input:
Sentence1: Female gametophytes produce eggs inside the ovaries of flowers.
Sentence2: Female gametophytes produce eggs inside the fruit of flowers.

Output: eggs