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: is going to be on CNN's State Of The Union Sunday morning. Please tune in: http://is.gd/nryI  Responser: I'll be watching Senator. Thanks for your service.
