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:
Platelets blood component serves both structural and molecular functions in blood clotting.

Ex Output:
What blood component serves both structural and molecular functions in blood clotting?


Ex Input:
Light waves which interfere with themselves after interaction with a small aperture or target are said to diffract.

Ex Output:

Light waves which interfere with themselves after interaction with a small aperture or target are said to what?