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.

Ex Input:
Question: Is statin use associated with reduced risk of skin cancer : a meta-analysis?
Answer: Our meta-analysis does not support a potential role of statin use in the prevention of skin cancer.

Ex Output:
no


Ex Input:
Question: Are lobar microbleeds associated with a decline in executive functioning in older adults?
Answer: Lobar microbleeds, a marker of cerebral amyloid angiopathy, are associated with an accelerated rate of executive function decline. The presence of cerebral amyloid angiopathy may be an important source of cognitive decline in aging. Future work should examine how cerebral amyloid angiopathy interacts with neurodegenerative processes, such as Alzheimer's disease.

Ex Output:
yes


Ex Input:
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.

Ex Output:

no