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 are those with higher incomes often unable to manage?

Ex Output:
proper


Ex Input:
Which direction did the Rhine flow oy no by how much was the North Sea lower in the last cold phase than it is today?

Ex Output:
disfluent


Ex Input:
What does Yeke Mongghul Ulus mean?

Ex Output:

proper