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: Does autologous platelet-rich plasma reduce transfusion of homologous blood products in patients undergoing repeat valvular surgery?
Answer: Autologous platelet-rich plasma did not reduce perioperative bleeding or transfusion requirements in repeat valvular surgery.
Solution:
no