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: Solar and wind are still expensive compared to fossil fuels. Question: Solar and wind are still expensive compared to what?

A: fossil fuels
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Q: Sentence: Test wells are drilled to monitor groundwater pollution. Question: What are drilled to monitor groundwater pollution?

A: test wells
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Q: Sentence: When waves of two different frequencies interfere, beating occurs. Question: When waves of two different frequencies interfere, what phenomenon occurs?

A:
beating
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