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

Example Input: Octopuses use ink for hiding from sharks.
Example Output: What do Octopuses use for hiding from sharks?

Example Input: rattlesnakes can escape to avoid eagles
Example Output: What can escape to avoid eagles?

Example Input: When the arm straightens the elbow straightens.
Example Output:
When the arm straightens what?