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

Ex Input:
Photoautotrophs and chemoautotrophs are two basic types of autotrophs.

Ex Output:
Photoautotrophs and chemoautotrophs are two basic types of what?


Ex Input:
Correlation is different from causation term that refers to the factor that is producing the effect.

Ex Output:
Correlation is different from what term that refers to the factor that is producing the effect?


Ex Input:
Sun does the stratosphere get most of its heat.

Ex Output:
Where does the stratosphere get most of its heat?