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: Do continence alterations after ileal pouch-anal anastomosis diminish quality of life?
Answer: Although continence is clearly altered after pelvic pouch surgery, quality of life is extremely well preserved.
Output:
no