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: Thanks to @CamCox12 and his Channel 12 News Team for the story. http://www.12news.com/story/sports/2015/06/29/local-tennis-player-ready-to-take-on-wimbledon/29450593/  Responser: You have such a contagious smile!
