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: Is yttrium-90 radioembolization a safe and effective treatment for unresectable hepatocellular carcinoma : a single centre experience of 45 consecutive patients?
Answer: Radioembolization with 90Y is a safe and effective treatment for unresectable HCC.
Output:
yes