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

Ex Input:
Constructive interference is when two waves combine to create a larger wave.

Ex Output:
What is it called when two waves combine to create a larger wave?


Ex Input:
Reptiles are described by the term ectothermic, which means their internal temperature depends on the temperature of their environment.

Ex Output:
Reptiles are described by what term that means their internal temperature depends on the temperature of their environment?


Ex Input:
The smallest cyclic ether is called epoxide.

Ex Output:

The smallest cyclic ether is called what?