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

[Q]: What can an old, ill man do or rather not do?
[A]: What can and old, ill man not do?


[Q]: When did or what type of math was advanced during the Yuan?
[A]: What type of math was advanced during the Yuan?


[Q]: When was tell me about the source of the Rhine I mean the Last Glacial Maximum?
[A]:
When was the Last Glacial Maximum?