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 everyone who participated in our interactive budget workshops yesterday in Galesburg and Moline. I hope they were as informative to you as they were to me!  Responser: http://eaglerising.com/files/rfcr_ebook__17192.pdf
