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: "If public opinion does not demand change in Congress, it will not change." —President Obama on legislation to prevent gun violence— The White House (@WhiteHouse) June 10, 2014 Question: what topic was president obama talking about? Answer: legislation to prevent gun violence

yes