Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
One example is below.
Q: Earth rotates on its axis once times in one day.
A: How many times does Earth rotate on its axis in one day?
Rationale: The given output correctly poses a question based on the scientific fact given.
Q: Some materials have negative heats of solution; the dissolution of one of these solutes in water is called?
A:
Some materials have negative heats of solution; the dissolution of one of these solutes in water is called?