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: 2 weeks ago!!! Prepping at the US Open ESPN Tennis  Responser: I love this team!!! Whenever I see that you, Chris, will be a commentator on a match, I know it will be enjoyable, with a lot of pertinent and interesting information about the game itself and the players, and it'll be fun... because I love your sense of humor!!
