instruction:
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.
question:
Question: Is diffuse musculoskeletal pain associated with low vitamin D levels or improved by treatment with vitamin D?
Answer: Low vitamin D levels are not associated with diffuse musculoskeletal pain, and treatment with vitamin D does not reduce pain in patients with diffuse pain who have low vitamin D levels.
answer:
no


question:
Question: Does neo/adjuvant chemotherapy improve outcome in resected primary synovial sarcoma : a study of the French Sarcoma Group?
Answer: As for other high-grade soft-tissue sarcomas, well-planned wide surgical excision with adjuvant radiotherapy remains the cornerstone of treatment for SS. Neo-adjuvant or adjuvant chemotherapy should not be delivered outside a clinical trial setting.
answer:
no


question:
Question: Does endothelial cell dysfunction correlate differentially with survival in primary and secondary pulmonary hypertension?
Answer: Our findings suggest that short-term survival is related to the severity of endothelial cell dysfunction in pulmonary hypertension. In addition, exceedingly high vWF:Ag levels in PPH might reflect a particular pattern of endothelial cell dysfunction that could be associated with decreased short-term life expectancy in this disorder compared with secondary forms of pulmonary hypertension.
answer:

yes