Instructions: Convert a disfluent question to a proper question. 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: How oh rather when were Joseph Schumpeter and Norman Angell at their most prolific writing period?
Output:
When were Joseph Schumpeter and Norman Angell at their most prolific writing period?