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

Input: Consider Input: The behavior of ideal gases is explained by kinetic molecular theory.

Output: The behavior of ideal gases is explained by what theory of gases?


Input: Consider Input: Seismic waves prove the inner core it is solid.

Output: What do seismic waves prove about the inner core?


Input: Consider Input: Compression zones is the opposite of rarefaction zones, where air molecules in waves are loosely packed.


Output: What is the opposite of rarefaction zones, where air molecules in waves are loosely packed?