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

Q: How much did the clergy no do estimations of the population during the plague vary?

A: How much do estimations of the population during the plague vary?
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Q: Where are America's rather what are are the 3 post popular libraries for undergraduates in the Harvard system?

A: What are the 3 post popular libraries for undergraduates in the Harvard system?
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Q: Who popularized or uh developed the lithium ion battery which let to lead-lead dating?

A:
Who developed the lithium ion battery which let to lead-lead dating?
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