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

Input: Consider Input: A desmosome is a cell structure that anchors the ends of cardiac muscle fibers together.

Output: A desmosome is a cell structure that anchors the ends of what fibers together?


Input: Consider Input: Glycerol is a triol, an alcohol which contains three hydroxl functional groups.

Output: Glycerol is a triol, an alcohol which contains three what?


Input: Consider Input: The term endothermy means controlling body temperature within a narrow range from the inside through biochemical or physical means.


Output: What term means controlling body temperature within a narrow range from the inside through biochemical or physical means?