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

Ex Input:
Humans are the dominant land animals

Ex Output:
What are the dominant land animals?

Ex Input:
humans develop a placenta during pregnancy

Ex Output:
What do humans develop during pregnancy?

Ex Input:
Semen pass out of the body through a single tube that runs to the penis.

Ex Output:
What does semen pass out of the body through?