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.

What is not a symptom of type I hypersensitivity?
proper

Why were Northern Chinese ranked higher?
proper

What is inequality credited to no associated with lower levels of?

disfluent