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

Ex Input:
Bioterrorism is the spread of pathogens.

Ex Output:
What is the spread of pathogens?


Ex Input:
ink helps cephalopods to avoid being eaten

Ex Output:
What helps cephalopods to avoid being eaten?


Ex Input:
An optical microscope is an optical instrument.

Ex Output:

What is an optical instrument?