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.

Example Input: Question: Is periodontitis an independent risk indicator for atherosclerotic cardiovascular diseases among 60 174 participants in a large dental school in the Netherlands?
Answer: This cross-sectional analysis of a large cohort in the Netherlands of 60 174 participants shows the independent association of periodontitis with ACVD.
Example Output: yes

Example Input: Question: Does variation in the gene for human peroxisome proliferator activated receptor gamma ( PPARgamma ) play a major role in the development of morbid obesity?
Answer: Variation in the PPARgamma gene is unlikely to play a major role in the development of morbid obesity.
Example Output: no

Example Input: Question: Is urine NGAL useful in the clinical evaluation of renal function in the early course of acute pancreatitis?
Answer: The measurement of NGAL levels, particularly in urine, is simple, easy to interpret, routinely available, and clinically useful in the assessment of dynamic changes in kidney function for patients with AP.
Example Output:
yes