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

Ex Input:
Zero is the net force acting on an object when two equal forces are applied from opposite directions.

Ex Output:
What is the net force acting on an object when two equal forces are applied from opposite directions?


Ex Input:
Rod is the general shape of centrioles.

Ex Output:
What is the general shape of centrioles?


Ex Input:
In grazing, a predator partially eats but does not kill prey.

Ex Output:

In grazing, a predator partially eats but does not kill what?