Given a statement, generate a question such that the answer is contained in that statement.

Q: Warm blooded animals took advantage of the extinction of giant lizards

A: What species did warm blooded animals take advantage of?
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Q: insects can destroy corn crops

A: What can destroy corn crops?
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Q: Small-sized viviparous mammals evolved by Jurassic times.

A:
When did small-sized viviparous mammals evolve?
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