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.
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Question: Sentence: Triglycerides substances function as a long-term energy store in the human body and possess long carbon chains that prevent dissolving in water. Question: What substances function as a long-term energy store in the human body and possess long carbon chains that prevent dissolving in water?

Answer: triglycerides


Question: Sentence: Bases are antacids comprised of. Question: What are antacids comprised of?

Answer: bases


Question: Sentence: Fires, mainly caused by lightning, are a natural disturbance in temperate grasslands. Question: Fires, mainly caused by what, are a natural disturbance in temperate grasslands?

Answer:
lightning