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.

Input: Consider Input: Question: Does nonresponse to pre-operative chemotherapy preclude long-term survival after liver resection in patients with colorectal liver metastases?
Answer: Liver resection offers a long-term survival benefit for patients with CRM, even when tumor growth proceeds during pre-operative chemotherapy.

Output: no

Input: Consider Input: Question: Does production of infectious human immunodeficiency virus type 1 require depletion of APOBEC3G from virus-producing cells?
Answer: Our results suggest that Vif and APOBEC3G can be efficiently co-expressed. Thus, depletion of APOBEC3G from Vif expressing cells as suggested previously is not a universal property of Vif and thus is not imperative for the production of infectious virions.

Output: no

Input: Consider Input: Question: Does butylscopolammonium bromide provide additional analgesia when combined with morphine and ketorolac for acute renal colic?
Answer: Although the addition of BB to morphine and ketorolac appeared to show a statistically significant reduction in pain compared with morphine and ketorolac alone, a reduction of 1.2cm on VAS is unlikely to be clinically significant.
Output: no