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

Input: Consider Input: Particle accelerators can nuclear fusion in stars be simulated.

Output: How can nuclear fusion in stars be simulated?


Input: Consider Input: Bacteria may divide several times an hour.

Output: Bacteria may divide several what an hour?


Input: Consider Input: A person uses mechanical energy to pedal a bicycle.
Output: Which type of energy does a person use to pedal a bicycle?