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: Does an ultrasound-guided fascia iliaca catheter technique impair ambulatory ability within a clinical pathway for total hip arthroplasty?
Answer: BMI affects postoperative ambulation outcome after hip arthroplasty, whereas the type of regional analgesic technique used does not. An ultrasound-guided FIC technique offers similar analgesia with fewer side effects when compared with ITM.
Example Output: no

Example Input: Question: Do norepinephrine and ephedrine counteract the increase in cutaneous microcirculation induced by spinal anaesthesia?
Answer: Improved skin perfusion induced by spinal anaesthesia was not counteracted by the use of norepinephrine or ephedrine.
Example Output: no

Example Input: Question: Does intra-articular morphine 5 mg after knee arthroscopy produce significant pain relief when administered to patients with moderate to severe pain via an intra-articular catheter?
Answer: IA morphine 5 mg does not produce clinically significant pain relief in patients with moderate or severe pain after knee arthroscopy.
Example Output:
no