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

Input: Consider Input: Hydrocarbons compounds, which serve as fuels and are used in manufacturing, are called the driving force of western civilization.

Output: What compounds, which serve as fuels and are used in manufacturing, are called the driving force of western civilization?


Input: Consider Input: Momentum is directly related to both mass and velocity.

Output: Momentum is directly related to both mass and?


Input: Consider Input: In science, sound is defined as the transfer of energy from a vibrating object in waves that travel through matter.
Output: In science, what is defined as the transfer of energy from a vibrating object in waves that travel through matter?