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: Missed Dean's latest e-newsletter? Check it out here! http://us1.forward-to-friend2.com/forward/preview?u=f0037568fb940eda6504b7c7d&id=f2605e5887  Responser: My copy should be here in the mail today!!! YA!!!!!
