Convert a disfluent question to a proper question. A disfluent question is a question that has some interruptions in it while framing. A proper question is the correct form of the question without any disfluency.

How was the event covered when Thoreau wait no Jews were arrested by tax collectors?
How was the event covered when Jews were arrested by tax collectors?

Who proposes that the general election no scratch that who proposes that the date of the poll never varies?
Who proposes the date of the poll not be varied?

What astronomer worked for Yuan no um Kublai?

What astronomer worked for Kublai?