Definition: 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.
Input: Question: Are serum Alkaline Phosphatase Levels Associated with Increased Death Risk in Prevalent Hemodialysis Patients : 5-Year Experience in a Single Hemodialysis Center?
Answer: Our study demonstrated that serum ALP levels were not associated with increased death risk in prevalent HD patients over a 5-year interval.
Output:
no