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: Consider Input: Question: Does in a safety net population HPV4 vaccine adherence worsen as BMI increases?
Answer: Obesity, as well as gravidity and Hispanic race, are risk factors for lack of HPV4 vaccine adherence among young females in a safety net population.

Output: yes


Input: Consider Input: Question: Is weight-adjusted resting energy expenditure constant in critically ill patients?
Answer: Predictive equations were not able to estimate measured REE adequately in all the patients. Adjusted REE decreased with increasing body mass index; thus, a body mass index group-specific adaptation for the estimation of energy needs should be applied.

Output: no


Input: Consider Input: Question: Does extracorporeal shockwave lithotripsy in patients with distal ureteral calculi influence the prostate specific antigen value?
Answer: Treatment of distal ureteral calculi with SWL does not affect the serum PSA concentration.


Output: no