Definition: 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: Which hypothesis no conjecture holds that every even integer n greater than 2 can be expressed as a sum of two primes?

Which conjecture holds that every even integer n greater than 2 can be expressed as a sum of two primes?