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: Is [ The incidence of postoperative nausea and vomiting effected by routinely applied manual pre-oxygenation during induction of anesthesia ]?
Answer: Since neither routine pre-intubation positive pressure mask ventilation nor the medical qualification of the anesthesilogist affect the incidence of PONV neither variable needs to be taken into account in studies concerning PONV.
[EX A]: no

[EX Q]: Question: Does learning trajectories of children with special health care need across the severity spectrum?
Answer: Even children with less complex SCHN are at risk for academic failure. Early identification, together with integrated health and educational support, may promote stronger pathways of educational attainment for these children. Achieving these better outcomes will require the involvement of both educational and health practitioners.
[EX A]: yes

[EX Q]: Question: Is expression of IL-4 receptor alpha on smooth muscle cells necessary for development of experimental allergic asthma?
Answer: The impairment of IL-4Ralpha on smooth muscle cells had no effect on major etiologic markers of allergic asthma. These findings suggest that IL-4Ralpha responsiveness in airway smooth muscle cells during the early phase of allergic asthma is not, as suggested, necessary for the outcome of the disease.
[EX A]:
no