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: Does moderate controlled hypotension with sodium nitroprusside improve surgical conditions or decrease blood loss in endoscopic sinus surgery?
Answer: Intravenous anesthesia supplemented with N(2) is as effective as moderate controlled hypotension when blood loss, visibility in the surgical field, ACTH, AVP, and cortisol are examined.
A:
no