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 the preemptive use of diclofenac sodium in combination with ketamine and remifentanil enhance postoperative analgesia after laparoscopic gynecological procedures?
Answer: We have not found any preemptive or additive effect of diclofenac sodium with the concomitant use of ketamine.
Output:
no