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

Example Input: Most ferns produce the same type of spores and are therefore called homosporous.
Example Output: Most ferns produce the same type of spores and are therefore called what?

Example Input: You call a substance that is not an acid or a base neutral.
Example Output: What do you call a substance that is not an acid or a base?

Example Input: Human facial expressions can communicate emotions.
Example Output:
What can human facial expressions communicate?