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: Do traditional clinical risk assessment tools accurately predict coronary atherosclerotic plaque burden : a CT angiography study?
Answer: Coronary risk stratification using a risk factor only-based scheme is a weak discriminator of the overall atherosclerotic plaque burden in individual patients. Patients with little or no plaque might be subjected to lifelong drug therapy, whereas many others with substantial plaque might be undertreated or not treated at all.
[A]: no


[Q]: Question: Does oral contraceptive use by teenage women affect peak bone mass : a longitudinal study?
Answer: Oral contraceptive pill use by healthy, white, teenage females does not affect acquisition of peak bone mass.
[A]: no


[Q]: Question: Is heterotopic bone formation derived from multipotent stromal cells inhibited in aged mice?
Answer: Overall, our results suggest that impaired bone formation with age is mainly cell-autonomous and provide a rationale for the use of MSC-based therapies for the treatment of bone diseases in the elderly.
[A]:
no