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

Input: Consider Input: Human facial expressions can communicate emotions.

Output: What can human facial expressions communicate?

Input: Consider Input: Hookworms infest the intestines.

Output: What part of the body do hookworms infest?

Input: Consider Input: The lunar landscape is covered by craters caused by asteroid impacts.
Output: The lunar landscape is covered by craters caused by what?