Detailed Instructions: 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.
See one example below:
Problem: Why was uh where was the Rhine regulated with an upper canal?
Solution: Where was the Rhine regulated with an upper canal?
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: Who thought that the Yuan's social class system should be called social wealth um rather classes?
Solution:
Who thought that the Yuan's social class system should be called social classes?