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

Example Input: Rubber is an example of a(n) insulators that does not allow electrons to move through them.
Example Output: Rubber is an example of what type of substances that do not allow electrons to move through them?

Example Input: Metabolism produces waste energy in the form of heat, which helps warm-blooded (endotherm) animals conserve and maintain heat at a relatively constant body temperature.
Example Output: Metabolism produces waste energy in the form of heat, which helps what type of animal conserve and maintain heat at a relatively constant body temperature?

Example Input: All of the petals together are called a corolla.
Example Output:
All of the petals together are called what?