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.
Q: Question: Is the stimulation of mononuclear cells from patients with rheumatoid arthritis to degrade articular cartilage modulated by cartilage itself?
Answer: Cartilage constituents released from mildly damaged cartilage tissue, as may be present during the early events of RA. do not modulate the catabolic activity of RA MNC.
A:
no