Detailed Instructions: Given a passage with a question and an answer to that question, classify if the answer actually answers the question into 'yes' or 'no'. Output 'yes' if the answer answers the question and output 'no' if the answer does not answer the question.
Problem:Question: Is total antioxidant capacity significantly lower in cocaine-dependent and methamphetamine-dependent patients relative to normal controls : results from a preliminary study?
Answer: Stimulant-dependent patients had significantly lower antioxidant capacity relative to controls, suggesting that they may be at greater risk for oxidative damage to the brain and other organs.
Solution:
yes