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

[Q]: statement: plants start food chains, question: Plants start what?
[A]: food chains

[Q]: statement: Smallpox is not affected by medicines., question: What is not affected by smallpox?
[A]: medicines

[Q]: statement: teeth also make sharks excellent predators., question: What kind of predator does teeth make?
[A]:
sharks