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: a camera is used for recording images

Answer: Which would you use to record a live basketball game?

Question: Fact: a doorbell converts electrical energy into sound

Answer: I can use electrical energy to?

Question: Fact: if an object reflects light toward the eye then that object can be seen

Answer:
Which of these things is absolutely required in order to notice a bat flying towards you?