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

Ex Input:
Do particles collide more in two reactants fluid they are both in fluid forms or solid forms.

Ex Output:
Do particles collide more in two reactants when they are both in fluid forms or solid forms?


Ex Input:
Cells have four cycles.

Ex Output:
How many cycles do cells have?


Ex Input:
A cell wall is found in a plant cell but not in an animal cell.

Ex Output:
Which structure is found in a plant cell but not in an animal cell?