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

Example Input: working out requires a lot of fuel.
Example Output: What does working out require?

Example Input: Triceps tighten causing a person's elbow to straighten.
Example Output: What tightens causing a person's elbow to straighten?

Example Input: Dragonflies have two pairs of wings for flight
Example Output:
How many pairs of wings do dragonflies have?