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: cycles of freezing and thawing water cause ice wedging

A: Ice wedging is caused by cycles of freezing and thawing of what?
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Q: Fact: planets orbit stars

A: which of these is an accurate scenario?
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Q: Fact: a phase change is when matter changes from one state into another state

A:
All the water vanishes from a small depression basked in sunlight on a paved road because of?
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