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

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

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


Ex Input:
Zinc is active transition metal kind of metal.

Ex Output:
Zinc is what kind of metal.?


Ex Input:
One-dimensional kinematics was the distinction between total distance traveled and displacement first noted.

Ex Output:
Where was the distinction between total distance traveled and displacement first noted?