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.

Ex Input:
What aren't other alternative names for French and Indian War?

Ex Output:
proper


Ex Input:
What can often be predicted beforehand?

Ex Output:
proper


Ex Input:
What river is located near Cornell University?

Ex Output:

proper