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

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

Output: What does the male reproductive system consist of?


Input: Consider Input: Some viruses carry a few viral enzyme molecules within their capsids.

Output: Some viruses carry a few viral enzyme molecules within their what?


Input: Consider Input: Megapascals is the measure of water potential.
Output: What is the measure of water potential?