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: The vascular structure functions as a framework that reinforces the shape of the leaf.

Answer: What functions as a framework that reinforces the shape of the leaf?


Question: Gardasil is the vaccine to prevent infection of hpv.

Answer: What is the vaccine to prevent infection of hpv?


Question: The sun and all objects held by it's gravity make up the solar system.

Answer:
The sun and all objects held by it's gravity make up the?