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

Q: statement: a cat requires vision for seeing food animals, question: What does a cat require vision for seeing?

A: food animals
****
Q: statement: Trees are also autotrophs., question: Trees are also what?

A: autotrophs
****
Q: statement: respiration is essential, question: What is essential?

A:
respiration
****