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.

Who was or instead what did Polo call the Yuan capital?
What did Polo call the Yuan capital?

When did Hu Sihui die no Wei Yilin?
When did Wei Yilin die?

How many of the Duke's no the Pitt's planned expeditions weren't successful?

How many of the Pitt's planned expeditions weren't successful?