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: Acting like drawstrings to close off the alimentary canal, the sphincter regulates the passage of material between compartments. Question: Acting like drawstrings to close off the alimentary canal, what regulates the passage of material between compartments?

A: sphincter
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Q: Sentence: Respiration cycles the organic carbon into carbon dioxide gas. Question: Respiration cycles the organic carbon into which gas?

A: carbon dioxide
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Q: Sentence: Hydrocarbons are made of one carbon and four hydrogen atoms. Question: Which molecules are made of one carbon and four hydrogen atoms?

A:
hydrocarbons
****