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

Ex Input:
statement: A radio is used for exchange of knowledge., question: What is a radio used for?

Ex Output:
exchange of knowledge

Ex Input:
statement: Predators use sharp recurved nails to catch prey., question: What type of nails do predators use to catch prey?

Ex Output:
sharp recurved nails

Ex Input:
statement: teeth make shark excellent predators., question: What type of predator does teeth make?

Ex Output:
shark