Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Input: Consider Input: Some materials have negative heats of solution; the dissolution of one of these solutes in water is called?

Output: Some materials have negative heats of solution; the dissolution of one of these solutes in water is called?


Input: Consider Input: A skeleton that consists of hard, mineralized structures located within the soft tissue of organisms is called endoskeleton.

Output: A skeleton that consists of hard, mineralized structures located within the soft tissue of organisms is called what?


Input: Consider Input: Most ferns produce the same type of spores and are therefore called homosporous.


Output: Most ferns produce the same type of spores and are therefore called what?