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]: scientists found their Y. pestis sample where?
[EX A]: disfluent

[EX Q]: What does Rosenfield feel plays the most significant role in expanding the income gap?
[EX A]: proper

[EX Q]: What was invented in 1888 that revolutionized warfare or I guess 1880?
[EX A]:
disfluent

