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.

Ex Input:
Context: Obama on 2016 campaign: "It's not even Survivor or the Bachelorette. I mean it's like some 'Love and Hip-Hop' stuff" CNN (@CNN) November 4, 2016 Question: when did obama refer to reality tv shows Answer: during the 2016 campaign

Ex Output:
yes

Ex Input:
Context: As President I wanted to share with Russia (at an openly scheduled W.H. meeting) which I have the absolute right to do, facts pertaining.... Donald J. Trump (@realDonaldTrump) May 16, 2017 Question: who posted nude photos? Answer: selena gomez

Ex Output:
no

Ex Input:
Context: Gen Mattis last week: "If we did not have NATO today, we would need to create it"Pres-Elect Trump today: "NATO is obsolete" Ivo Daalder (@IvoHDaalder) January 16, 2017 Question: what superlative does donald use to describe the bill? Answer: great

Ex Output:
no