instruction:
Given a statement and question, generate the answer to the question such that the answer is contained in the statement.
question:
statement: Water is essential for all known living things in the universe., question: What is essential for all known living things in the universe?
answer:
Water


question:
statement: Complex chemistry is needed to promote quality of life, question: What is needed to promote quality of life?
answer:
Complex chemistry


question:
statement: Crustaceans change color to protect themselves against carnivorous animals., question: What do rustaceans change to protect themselves against carnivorous animals?
answer:

color