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: 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.
no

Question: Does electrical stimulation prior to delayed reinnervation enhance recovery in muscles of rats?
Answer: The primary factors that inhibited reinnervation and recovery following delayed reinnervation were not alleviated by the electrical stimulation during the period of muscle denervation.
no

Question: Do aging , COPD , and other risk factors explain the increased prevalence of pulmonary Mycobacterium avium complex in Ontario?
Answer: Although population aging appears to be a major risk factor, the increase in pMAC disease in Ontario could be only partly explained by aging, increases in COPD, HIV, solid organ transplantation, and TNF-α inhibition therapy. The increase in pMAC is likely multifactorial and may be affected by environmental or pathogen factors not addressed in this study.

no