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

Example Input: a mouth is used for eating fish by some birds
Example Output: What is used for eating fish by birds?

Example Input: Locusts are amongst the most dramatic and devastating pest, they spread viruses and destroy crops.
Example Output: What are among the most dramatic and devastating pests?

Example Input: The calcium carbonate hardens and protects the shell.
Example Output:
What hardens and protects the shell?