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: Cells come from preexisting cells. Question: Where do cells come from?

A: preexisting cells
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Q: Sentence: The potential of galvanic cell can be used to measure the ph of a solution. Question: The potential of what can be used to measure the ph of a solution?

A: galvanic cell
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Q: Sentence: Naphthalens is a chemical which is commonly used in mothballs. Question: Naphthalens is a chemical which is commonly used in what?

A:
mothballs
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