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

[Q]: statement: Complex chemistry is needed to promote quality of life, question: What is needed to promote quality of life?
[A]: Complex chemistry


[Q]: statement: Braking and the car's velocity overcoming traction causes cars to slide, question: What causes cars to slide?
[A]: Braking and the car's velocity overcoming traction


[Q]: statement: Complex systems are needed to carry out all the functions of organisms, question: What is needed to carry out all functions of organisms?
[A]:
Complex systems