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 Q]: How is the prime number p in Chebyshev's no, in Bertrand's postulate expressed mathematically?
[EX A]: disfluent

[EX Q]: On which day did Queen Elizabeth II or rather Queen Elizabeth I open the new Scottish Parliament Building?
[EX A]: disfluent

[EX Q]: Who is the chairman of Microsoft as well as the NBA commissioner?
[EX A]:
proper