Given a statement and question, generate the answer to the question such that the answer is contained in the statement.
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Question: statement: Vehicle brakes rely on the tire traction to reduce speed, question: What do brakes use to reduce speed?

Answer: tire traction


Question: statement: Cars require surfaces with less friction., question: Cars require surfaces with what?

Answer: less friction


Question: statement: Trial runs are often done in labs, question: Where are trial runs often done?

Answer:
labs