Given a fact, create a question that can be answered using the fact. Construct the question such that it is unambiguous, has a unique answer and the answer can be given using the fact.

Q: Fact: a grassland environment receives more rainfall than a desert

A: Where would more water fall from the sky yearly?
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Q: Fact: a windmill does not create pollution

A: What is safest to breathe around?
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Q: Fact: lighting a candle causes that candle to burn

A:
Which of the following burns due to wax?
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