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: Do acute pain and central nervous system arousal restore impaired hypoxic ventilatory response during sevoflurane sedation?
Answer: The observation that acute pain caused an increase in baseline ventilation with no effect on the acute hypoxic ventilatory response indicates that acute pain interacted with ventilatory control without modifying the effect of low-dose sevoflurane on the peripheral chemoreflex loop. Acute pain increased the level of arousal significantly during sevoflurane inhalation but did not restore the approximately 30% depression of the acute hypoxic ventilatory response by sevoflurane. The central nervous system arousal state per se did not contribute to the impairment of the acute hypoxic ventilatory response by sevoflurane.
[EX A]: no

[EX Q]: Question: Does mR spectroscopy indicate diffuse multiple sclerosis activity during remission?
Answer: The absence of early tissue atrophy and apparent axonal dysfunction (NAA loss) in these RR MS patients suggests that both are preceded by diffuse glial proliferation (astrogliosis), as well as possible inflammation, demyelination and remyelination reflected by elevated mI, Cho and Cr, even during clinical remission and despite immunomodulatory treatment.
[EX A]: yes

[EX Q]: Question: Do phosphorus application and elevated CO2 enhance drought tolerance in field pea grown in a phosphorus-deficient vertisol?
Answer: Phosphorus application and eCO2 interactively enhanced periodic drought tolerance in field pea as a result of decreased stomatal conductance, deeper rooting and high Pi availability for carbon assimilation in leaves.
[EX A]:
yes