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 Input: What is the something that wait what happens to the gravel found in xenoliths?
Example Output: What happens to the gravel found in xenoliths?

Example Input: What type of musical instruments did the Islamic no the Yuan keep out of China?
Example Output: What type of musical instruments did the Yuan keep out of China?

Example Input: What can not be mostly discontented no predicted beforehand?
Example Output:
What can not be mostly predicted beforehand?