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: In the layered model of the Earth, the mantle has two layers above it. What are they no sorry it has two layers belows it, what are they?

In the layered model of the Earth, the mantle has two layers below it. What are they?