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:
Was the um no let's go with, what group was trained at Cambridge in 1643?

Ex Output:
disfluent


Ex Input:
Who realized that the effects of gravity might be observed differently at smaller distances no sorry who realized that gravitational deceleration was proportional to mass?

Ex Output:
disfluent


Ex Input:
Who created ARPANET?

Ex Output:

proper