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

Example Input: a telescope is used for seeing betelgeuse by astronomers
Example Output: Who uses a telescope to see betelgeuse?

Example Input: jaws make sharks excellent predators
Example Output: What makes sharks excellent predators?

Example Input: Stimuli can cause the brain to experience pain.
Example Output:
Stimuli can cause the brain to experience what?