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

statement: respiration is essential, question: What is essential?
respiration

statement: Blending in with surroundings is used for protection by prey against predators., question: Blending in with surroundings is used for protection by what?
prey against predators

statement: Females use breasts to produce milk, question: What do females use to produce milk?

breasts