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: Is progression of cerebral white matter lesions associated with development of depressive symptoms in elderly subjects at risk of cardiovascular disease : The PROSPER Study?
Answer: This longitudinal study does not confirm the involvement of cerebrovascular disease expressed as MRI white matter hyperintensities in the development of depressive symptoms in elderly subjects.
no