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

Ex Input:
Air is made of atoms.

Ex Output:
Which of the following is made of atoms?


Ex Input:
Stirring, surface area, and temperature affect the rate at solute dissolves what occurs.

Ex Output:
Stirring, surface area, and temperature affect the rate at which what occurs?


Ex Input:
Prokaryotes are single-celled or colonial organisms that do not have membranebound nuclei.

Ex Output:
What are single-celled or colonial organisms that do not have membranebound nuclei?