Definition: Given a 'poster' sentence and a corresponding 'response' (often, from Facebook or Reddit)classify the sentiment of the given response into four categories: 1) Positive, 2) Negative, 3) Neutral, and 4) Mixed if it contains both positive and negative.
Input: Poster: While Congress is in recess, I'm at Fort McCoy in Wisconsin completing my annual Army Reserve training. What a great honor to work shoulder to shoulder with our nation's finest!  Responser: Just think how frustrated the tax payers must be, we have to fund this circus. http://www.cincinnati.com/story/news/politics/2014/08/09/frustrated-wenstrup-mired-dcs-muck/13846989/
