instruction:
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.
question:
To what extent did Leibniz I mean Fermat confirm the validity of Euler numbers?
answer:
disfluent


question:
What can often be predicted beforehand?
answer:
proper


question:
What rates of health and social problems are in countries with low inequality?
answer:

proper