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: I really appreciate this article Thanks for a great interview Tony Castleberry http://raleighco.com/comedy/alonzo-bodden-comedian/  Responser: That is a very nice article.
