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.

Ex Input:
Question: Is postoperative intravenous drip infusion required after minilaparotomy cholecystectomy?
Answer: There is no clinical indication to continue IV drip infusion after full recovery from anaesthesia in patients operated for minilaparotomy cholecystectomy.

Ex Output:
no

Ex Input:
Question: Does biofeedback-guided control of abdominothoracic muscular activity reduce regurgitation episodes in patients with rumination?
Answer: Rumination is produced by an unperceived somatic response to food ingestion that disrupts abdominal accommodation and can be effectively corrected by biofeedback-guided control of abdominothoracic muscular activity.

Ex Output:
yes

Ex Input:
Question: Does prevalence and correlate of unmet supportive care needs in patients with resected invasive cutaneous melanoma?
Answer: Around a quarter of melanoma patients may have unmet support needs in the mid to long term after primary treatment. In particular, patients who are younger, less educated, distressed or socially isolated could benefit from more support.

Ex Output:
yes