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

Input: Consider Input: A vapor light produces visible light by electroluminescence process.

Output: A vapor light produces visible light by what process?


Input: Consider Input: In science, theory is supported by much evidence, widely accepted by credible scientists, and unlikely to be disproved.

Output: In science, what is supported by much evidence, widely accepted by credible scientists, and unlikely to be disproved?


Input: Consider Input: Collisions between hydrogen atoms demonstrate one form of nuclear fusion.


Output: Collisions between hydrogen atoms demonstrate one form of what?