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

Ex Input:
The male reproductive system consists of structures that produce sperm and secrete testosterone.

Ex Output:
What does the male reproductive system consist of?

Ex Input:
The opening in the front of the eye is called pupil.

Ex Output:
What is the opening in the front of the eye called?

Ex Input:
The insect reaches full size, acquires wings, and becomes sexually mature after molt final stage.

Ex Output:
The insect reaches full size, acquires wings, and becomes sexually mature after what final stage?