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.

What was no Where and when did the investigation of the plague pathogen begin?
Where and when did the investigation of the plague pathogen begin?

What is the oldest known rock in the Grand or actually in the entire world?
What is the oldest known rock in the world?

When did Ariq Böke invade um no Mongke Khan die?

When did Mongke Khan die?

