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: Water are most cells surrounded by. Question: What are most cells surrounded by?
[A]: water


[Q]: Sentence: Mutation is essential in order for evolution to occur because it increases genetic variation and the potential for individuals to differ. Question: What phenomenon is essential in order for evolution to occur because it increases genetic variation and the potential for individuals to differ?
[A]: mutation


[Q]: Sentence: Over 90% of the energy we use comes originally from the sun. Question: Over 90% of the energy we use comes originally from what?
[A]:
sun