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

Example Input: You call a substance that is not an acid or a base neutral.
Example Output: What do you call a substance that is not an acid or a base?

Example Input: Thermoregulation is the process when animals maintain an internal temperature.
Example Output: What is the process when animals maintain an internal temperature?

Example Input: Instruments that measure the angle of the slope of a volcano are called tilt meters.
Example Output:
Instruments that measure the angle of the slope of a volcano are called what?