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: Had a great chat with @BrookeBCNN .. So rare to find a host who has real convos on live tv.. Thanks Brooke !! http://cnn.it/1rgcOod  Responser: Mike kay most stubborn person ever.
