Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: A collapsing nebula leads to nuclear fusion process.

Answer: A collapsing nebula leads to what process?


Question: The majority of human genes have two or more possible alleles.

Answer: How many possible alleles do the majority of human genes have?


Question: Haumea, which is the third brightest kuiper belt object has an odd oval shape which is probably caused by extremely rapid rotation.

Answer:
Haumea, which is the third brightest kuiper belt object has an odd oval shape which is probably caused by what?