instruction:
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.
question:
What lens do petrologists use no just what lens it is that is used to identify chemical composition?
answer:
What lens is used to identify chemical composition?


question:
Who stated or who ordered the Stern Review?
answer:
Who ordered the Stern Review?


question:
When did the KFSN or uh KMJ-TV first broadcast?
answer:

When did the KMJ-TV first broadcast?