Classify the input text into either disfluent questions or proper questions. 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.

Colonization is responsible for the slow spread of what, sorry I meant Imperialism, and the spread of what is it responsible for?
disfluent

Who was Kublai Khan's grandfather no sorry uncle?
disfluent

What conjecture holds that there is an infinite amount of twin positives?

proper

