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: President Obama will go down as perhaps the worst president in the history of the United States!— Donald J. Trump (@realDonaldTrump) August 2, 2016 Question: who was perhaps the worst president of the united states? Answer: president obama

yes