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.
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Question: Fact: snow falls during the winter in the arctic environment

Answer: if white cold items drop from the sky, what might these be?


Question: Fact: processes sometimes produce waste products

Answer: What product eventually will become human waste?


Question: Fact: pushing a button sometimes completes a circuit

Answer:
A television may turn on at the push of a button because?