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.

Input: Consider Input: What didn't happen as a result of the Russo-Japanese War?

Output: proper


Input: Consider Input: What took place during the Mexian War?

Output: proper


Input: Consider Input: What does the Carmichael primality test depend on?


Output: proper