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.

Example Input: Question: Are complaints of sleep disturbances associated with cardiovascular disease : results from the Gutenberg Health Study?
Answer: Given the high prevalence of complaints of sleep disturbances and their strong impact on health status, increased efforts should be undertaken for their identification and treatment.
Example Output: yes

Example Input: Question: Does sympathetic nerve activity reduce proprioceptive acuity in humans?
Answer: The present findings contradict previous reports from animal studies and the hypothesis that sympathetic nerve activity reduces proprioceptive acuity.
Example Output: no

Example Input: Question: Are tAU mutations a predominant cause of frontotemporal dementia in Canadian patients?
Answer: Our results agree with previous work suggesting that mutations in this gene are not a frequent cause of the frontotemporal dementia phenotype in Canadian patients.
Example Output:
no