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

Input: Consider Input: In the puberty stage is a time of significant mental, emotional and social modification.

Output: What stage is a time of significant mental, emotional and social modification?

Input: Consider Input: Turtle beaks can crack through hard calcium carbonate

Output: What do turtle beaks crack through?

Input: Consider Input: Blending in with surroundings is used for protection by prey against predators.
Output: Blending in with surroundings is used for protection by what?