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.

[Q]: Question: Is l-arginine , the natural precursor of NO , effective for preventing bone loss in postmenopausal women?
Answer: We conclude from these results that supplementation with L-arginine hydrochloride is not effective for improving bone mass in humans.
[A]: no


[Q]: 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.
[A]: no


[Q]: Question: Does long-term endurance training prevent the age-related decrease in left ventricular relaxation properties?
Answer: Our data provide evidence that long-term training does not reduce the age-related decline in LV relaxation properties in humans. This finding implies that other mechanisms, such as increased LV filling pressures due to expanded blood volume, are probably responsible for the higher contribution of early diastolic filling to LV filling in master athletes compared with their sedentary counterparts. However this hypothesis needs to be confirmed.
[A]:
no