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: stalactites are formed by deposition

A: The ceiling of the cave grew closer to the ground due to:?
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Q: Fact: as elevation of a place decreases , how much a flood will affect that place will increases

A: At high elevations, there is little risk of flooding, but at low elevations, what will happen?
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Q: Fact: burning a living thing usually causes harm to that living thing

A:
When the Mountain held the Hound's face to the fire, it caused?
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