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

Ex Input:
Oxygen gas is given off by plants.

Ex Output:
Which gas is given off by plants?


Ex Input:
Macroevolution happens when forces of evolution work over a long period of time.

Ex Output:
What happens when forces of evolution work over a long period of time?


Ex Input:
Parasitism isl a relationship where the bacteria benefit and and the other organism is harmed.

Ex Output:

What would you call a relationship where the bacteria benefit and and the other organism is harmed?