Detailed Instructions: 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 plasma visfatin/nicotinamide phosphoribosyltransferase ( visfatin/NAMPT ) concentration related to kidney function in elderly subjects?
Answer: The results of our study suggest that plasma visfatin/NAMPT levels are not affected by impaired kidney excretory function in elderly subjects.
A:
no