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.
Example: Why was uh where was the Rhine regulated with an upper canal?
Example solution: Where was the Rhine regulated with an upper canal?
Example explanation: The above disfluent question is correctly converted to a proper question. The 'uh' and the 'why' before the correction should be removed to make it fluent.

Problem: Which profession er no historian was popular in the 21st century?

Solution: Which historian was popular in the 21st century?