Definition: In this task, you are given a context tweet, a question and corresponding answer of given question. Your task is to classify given passage into two categories: (1) "yes" if the given context is useful in answering the question, and (2) "no" if the given context is not useful.
Input: Context: Rescued Yezidis aboard Iraqi Air Force helicopter that evacuated trapped civilians from Mount Sinjar Ivan Watson (@IvanCNN) August 11, 2014 Question: who thought they were doing the national anthem of westeros? Answer: russia

no