Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.

Q: At which or no rather what time did a river system develop in the Upper Rhine Graben?

A: What time did a river system develop in the Upper Rhine Graben?
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Q: How many no What rank for most populous city in the European Union does Warsaw hold?

A: What rank for most populous city in the European Union does Warsaw hold?
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Q: Who or make that what needs to be avoided with civil disobedience?

A:
What needs to be avoided with civil disobedience?
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