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

[Q]: statement: H20 is essential for all animals on earth., question: What is essential for all animals on earth?
[A]: H20


[Q]: statement: x-rays are used to save lives, question: What is used to save lives?
[A]: x-rays


[Q]: statement: spiders do not fly, question: What do not fly?
[A]:
spiders