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 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.
[A]: no


[Q]: Question: Is an Ile93Met substitution in the UCH-L1 gene a disease-causing mutation for idiopathic Parkinson 's disease?
Answer: Our study suggested that Ile93Met of UCH-L1 gene did not influence risk of IPD.
[A]: no


[Q]: Question: Does conversion of laparoscopic colon resection affect survival in colon cancer?
Answer: The results of our study suggest there is no survival difference in patients requiring conversion of laparoscopic resection indicated for colorectal cancer. Further examination of this question is warranted to determine whether laparoscopic resection of colorectal cancer should be offered to all patients, including those at high risk for conversion.
[A]:
no