Definition: 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: There's a UNESCO World Heritage site in the Rhine Gorge between the Koblenz and who umm rather what?

There's a UNESCO World Heritage site in the Rhine Gorge between the Koblenz and what?