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

Example Input: blending with colors and patterns is used by prey to avoid predators
Example Output: Who uses colors and patterns to avoid predators?

Example Input: copying takes place in cells.
Example Output: Where does copying take place?

Example Input: at least one in every five people in the world is in a time of significant mental, emotional and social changes.
Example Output:
How many people in the world are in a time of significant mental, emotional and social changes?