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

[Q]: statement: a mouth is used for eating fish by some birds, question: What is used for eating fish by some birds?
[A]: a mouth


[Q]: statement: the amount of space an object takes up is its dimensions, question: What is the amount of space an object takes?
[A]: dimensions


[Q]: statement: Racing requires a lot of calories., question: How much calories does racing require?
[A]:
a lot