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

Example Input: Pressure and vibration are examples of physical type of stimuli.
Example Output: Pressure and vibration are examples of what type of stimuli?

Example Input: The location of an object in a frame of reference is called position.
Example Output: The location of an object in a frame of reference is called what?

Example Input: Sound is the transfer of energy from a vibrating object in waves that travel through matter.
Example Output:
Sound is the transfer of energy from a vibrating object in waves that travel through what?