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.

[EX Q]: Question: Does school-based physical activity compromise children 's academic performance?
Answer: The AS! BC model is an attractive and feasible intervention to increase physical activity for students while maintaining levels of academic performance.
[EX A]: no

[EX Q]: Question: Do several mechanical manipulations of the wall of the inner ear affect air and bone conduction auditory thresholds?
Answer: It is likely that an alternative mode of cochlear excitation is possible.
[EX A]: no

[EX Q]: Question: Does maraviroc concentrate in the cervicovaginal fluid and vaginal tissue of HIV-negative women?
Answer: Higher maraviroc exposure in the female genital tract provides a pharmacologic basis for further evaluation of chemokine receptor 5 antagonists in HIV infection prophylaxis. This is the first study to report antiretroviral VT concentrations, CVF protein binding, and CVF terminal elimination.
[EX A]:
yes