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 primitive jawed vertebrates have no no um do not contain lymphocyte-derived molecules?
What primitive jawed vertebrates do not contain lymphocyte-derived molecules?

What weren't er when didn't Washington learn about Trent's retreat?
When didn't Washington learn about Trent's retreat?

Who was the second I mean first Cetrum President?

Who was the first Cetrum President?