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: Is serum Reg-Ialpha suitable marker of metabolic syndrome?
Answer: Our study, for the first time, indicates that serum Reg-1alpha is not useful for the diagnosis of metabolic syndrome (Tab. 3, Ref. 7).
Example Output: no

Example 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.
Example Output: no

Example Input: Question: Is plasminogen activation by fibroblasts from periodontal ligament and gingiva directly affected by chemokines in vitro?
Answer: These results suggest that plasminogen activation by PDL and GF is not directly affected by the chemokines even in the presence of the inflammatory mediators TGF-beta and IL-1.
Example Output:
no