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: Yesterday, I met with Senator Durbin and the Director of the Federal Bureau of Prisons Charles Samuels to discuss the continued progress in opening Thomson Prison.  Responser: It's about time something is done with Thomson's Prison. Maybe a chance to get people in the area working!!!!
