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 radio is used for communication

Answer: Which can be used to pass information from one person to another?

Question: Fact: An example of a mixture is clay mixed together

Answer: An example of a mixture is?

Question: Fact: squirrels gather nuts in the autumn to eat during the winter

Answer:
Squirrels stay busy in the autumn?