Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
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Question: Why is Powsin no Warsaw's flora very rich in species?

Answer: Why is Warsaw's flora very rich in species?


Question: When did or what type of math was advanced during the Yuan?

Answer: What type of math was advanced during the Yuan?


Question: Who wrote about the great pestilence in 1908 no huh sorry 1893?

Answer:
Who wrote about the great pestilence in 1893?