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 functional activity of the cannabinoid 1 receptor affected by opioid antagonists in the rat brain?
Answer: Our results suggest that the functional activity of WIN55212-2-stimulated [(35)S]GTPS binding was not affected by opioid antagonists in the rat brain membranes. Although the exact mechanism remains unclear, our results may partially elucidate their actions.
Solution:
no