Given the task definition and input, reply with output. 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.

Question: Are lewy bodies increased in progressive supranuclear palsy compared with normal controls?
Answer: In contrast to increased frequency of LB in AD, there is no apparent interaction between LB and the tau pathology in PSP.
no