Q: 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: Does [ Pre-operative smoking cessation always reduce the incidence of surgical site infection after gastrointestinal surgery ]?
Answer: Pre-operative smoking cessation does not reduce the incidence of SSI. However, since continuation of smoking has no benefits for the safety of surgery, anesthesiologists must advice patients to quit smoking before surgery.
A:
no