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: #PopeFrancis asks the crowd, "Is the priest talking too much?" Catholic News Svc (@CatholicNewsSvc) July 9, 2015 Question: what's the worlds largest risk to health? Answer: air pollution

no