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]: What do contractors inspect during building construction?
[EX A]: proper

[EX Q]: What policy did Marxists no um Stalin implement shortly after Lenin's birth?
[EX A]: disfluent

[EX Q]: The principles of succession are presence no dependent on what thought?
[EX A]:
disfluent