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

statement: Liquid is essential for all life in the world., question: What is essential for all life in the world?
Liquid

statement: Mice catch small creatures to eat, question: What species catch small creatures to eat?
Mice

statement: Predators use sharp recurved nails to catch prey., question: What type of nails do predators use to catch prey?
sharp recurved nails