Definition: 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: 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