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

Yeast fermentation causes holes in bread.
What causes holes in bread?

Radioactive decay can give off energy and particles.
Radioactive decay can give off energy and what else?

The law of parsimony is the scientific concept stating that when looking at two competing theories, the one with fewer assumptions should be chosen.
What the scientific concept stating that when looking at two competing theories, the one with fewer assumptions should be chosen?