Instructions: 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: Question: Is second-look endoscopy associated with better clinical outcomes after gastric endoscopic submucosal dissection : a prospective , randomized , clinical trial analyzed on an as-treated basis?
Answer: Single-center analysis.
Output:
no