TASK DEFINITION: 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.
PROBLEM: When did the Varsovians enlargement take place no the Warsaw area?

SOLUTION: disfluent

PROBLEM: What people are least vulnerable to infection?

SOLUTION: proper

PROBLEM: Which no make that what did stratigraphic correlation replace?

SOLUTION:
disfluent