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 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: Does usability testing found problems for novice users of pediatric portals?
Answer: Despite parental involvement and prior heuristic testing, scenario-based testing demonstrated difficulties in navigation, medical language complexity, error recovery, and provider-based organizational schema. While such usability testing can be expensive, the current study demonstrates that it can assist in making healthcare system interfaces for laypersons more user-friendly and potentially more functional for patients and their families.
[EX A]: yes

[EX Q]: Question: Are `` Covering our backs '' : ambulance crews ' attitudes towards clinical documentation when emergency ( 999 ) patients conveyed to hospital?
Answer: The low rates of completion of clinical records for non-conveyed patients appeared to result from crew members not believing they were important in every circumstance, combined with a lack of management focus. Low rates of completion may lead in turn to clinical risk and a risk of litigation if things go wrong.
[EX A]:
no