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:
Europe first colonized the Americas, then Asia, but what continent was second I mean fourth?

Ex Output:
disfluent


Ex Input:
This project structure allow the owner to integrate the services of who throughout the design and construction sorry These project structures?

Ex Output:
disfluent


Ex Input:
When did Goldbach or wait Landau propose his four conjectural problems?

Ex Output:

disfluent