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.

Input: Consider Input: When did Kublai attack no defend Xiangyang?

Output: When did Kublai defend Xiangyang?


Input: Consider Input: How was no why was the Kleitman-Aserinsky experiment conducted?

Output: Why was the Kleitman-Aserinsky experiment conducted?


Input: Consider Input: Where was no make that what was confusing with KPN?


Output: What was confusing within KPN?