Detailed Instructions: 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.
Problem:Question: Do antiphospholipid antibodies correlate with stroke severity and outcome in patients with antiphospholipid syndrome?
Answer: In young stroke patients with APS, serum levels of IgM aCL within 48h are correlated with stroke severity and levels of IgG anti-2GPI within 48h are correlated with three-month outcomes.
Solution:
yes