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:
When was the Cow Ford er like Jacksonville town charter approved?

Ex Output:
disfluent


Ex Input:
What is the term when top income earners aspire to obtain the same standards of living as people wealthier than themselves?

Ex Output:
proper


Ex Input:
When did Mongke Khan kill Great Khan?

Ex Output:

proper