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.

Example Input: Did the RAND corporation retain any of the research?
Example Output: proper

Example Input: What isn't the gender income inequality in Botswana, sorry, I mean Bahrain?
Example Output: disfluent

Example Input: What, rather than Islamism, principles no requires no explanation?
Example Output:
disfluent