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: grey clouds are a source of precipitation

A: A sky that is mostly this color will likely be precipitating:?
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Q: Fact: classifying means grouping materials by their properties

A: Which would be excluded from a list of objects with metallurgical properties?
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Q: Fact: touch can be used for detecting texture

A:
What might a blind person likely use to what sandpaper is?
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