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.
Input: Question: Does pulmonary morbidity improve after autologous stem cell transplantation in POEMS syndrome?
Answer: Patients with POEMS syndrome treated with aPBSCT have significant improvement in PFTs, respiratory muscle strength, imaging, and post-transplant IL-6. The improvement in PFTs persists during long-term follow-up.
Output:
yes