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: Does patient-prosthesis mismatch in patients undergoing bioprosthetic aortic valve implantation increase risk of reoperation for structural valve deterioration?
Answer: Patients suffering from mismatch were twice as likely to undergo reoperation for aortic bioprosthesis replacement for SVD than those without mismatch.
[A]: yes


[Q]: Question: Do extremely cold and hot temperatures increase the risk of diabetes mortality in metropolitan areas of two Chinese cities?
Answer: The results indicate that both extremely cold and hot temperatures increase diabetes mortality in different manners in Harbin and Chongqing. Diabetes education programs should include information on either managing or combating the effects of extreme hot and cold weather.
[A]: yes


[Q]: Question: Is pretreatment quality of life an independent prognostic factor for overall survival in patients with advanced stage non-small cell lung cancer?
Answer: Pretreatment QOL measured by Uniscale is a significant and an independent prognostic factor for OS, and QOL should be routinely integrated as a stratification factor in advanced NSCLC trials.
[A]:
yes