In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.

Q: Sentence: Most of food's chemical energy ultimately comes from sunlight. Question: Most of food's chemical energy ultimately comes from what source?

A: sunlight
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Q: Sentence: Light retains its original color under water because frequency remains the same when light is refracted. Question: Light retains its original color under water because what remains the same when light is refracted?

A: frequency
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Q: Sentence: An excellent solvent that holds heat well and allows hydrogen bonds, water substance has many properties critical to life. Question: An excellent solvent that holds heat well and allows hydrogen bonds, what substance has many properties critical to life?

A:
water
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