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 are the Muskogee-speaking, no sorry, the Siouan-speaking tribes?
Example Output: What are the Siouan-speaking tribes?

Example Input: In 2005 how many employees were contractors no um employed by the government?
Example Output: In 2005 how many employees were employed by the government?

Example Input: Who umm I mean what is unable to evade the immune system?
Example Output:
What is unable to evade the immune system?

