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: An outrageous violation of Americans' privacy rights. NSA collects all Verizon records in the country - every day. http://gu.com/p/3gc62/tw  Responser: Oh ... Yeah, the news already did a detailed job reporting this... Now lets see what YOU do as our rep... Cuz with the news we can just switch the channel... With an inept representative we can vote..
