instruction:
Given a statement and question, generate the answer to the question such that the answer is contained in the statement.
question:
statement: Blending in with surroundings is used for protection by prey against predators., question: Blending in with surroundings is used for protection by what?
answer:
prey against predators


question:
statement: Frogs make noises with the larynx which is in the throat., question: What is in the throat?
answer:
larynx


question:
statement: An optical microscope is an optical instrument., question: What is an optical instrument?
answer:

optical microscope