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 interferon -2b gain high sustained response therapy for advanced essential thrombocythemia and polycythemia vera with JAK2V617F positive mutation?
Answer: The data confirmed that IFN -2b benefited the patients with ET or PV, particularly for JAK2V617F(+) mutation.
yes