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.

Input: Consider Input: Who had mathmatical insite?

Output: proper


Input: Consider Input: Deceleration can be described through what?

Output: proper


Input: Consider Input: When was the strongly influenced delta no the Holocene?


Output: disfluent