Definition: 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: Question: Does hyperintense cortical signal on magnetic resonance imaging reflect focal leukocortical encephalitis and seizure risk in progressive multifocal leukoencephalopathy?
Answer: Seizures are a frequent complication in PML. HCS is associated with seizures and IRIS, and correlates histologically with JCV focal leukocortical encephalitis.
Output:
yes