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: It's a shame no one is listening to some of our greatest musicians http://thejazzline.com/news/2015/03/jazz-least-popular-music-genre/  Responser: Thanks Kenny G for that.
