Given a statement, generate a question such that the answer is contained in that statement.

Ex Input:
Mice catch small creatures to eat

Ex Output:
Who catch small creatures to eat?


Ex Input:
Cytoplasm refers to all of the cellular material inside the outer membrane.

Ex Output:
What refers to all of the cellular material inside the outer membrane?


Ex Input:
mammals require food in order to run

Ex Output:

What do mammals require to run?