Q: 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.
Question: Do [ Effects of continuous positive airway pressure treatment of inflammatory factors in patients with overlap syndrome ]?
Answer: CPAP treatment significantly reduces the serum levels of CRP and TNF- so as to improve inflammation responses in OS and OSAS patients.
A:
yes