Definition: 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: Does influenza vaccination result in an increase in relapses in patients with ANCA-associated vasculitis?
Answer: Vaccination against influenza does not increase the relapse rate in patients with ANCA-associated vasculitis.
Output:
no