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: Polish aristocrat challenges Farage to a duel . This is what Nigel would do to him #UKIP Paul Oakley UKIP (@PaulJamesOakley) April 13, 2015 Question: what nationality is the aristocrat challenging farage to a duel Answer: polish

yes