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: Today at The Sweat Shoppe spin class I paid for every cookie,apple tart,burger, dinner ,dessert and late night pizza from the last 2 weeks of working cruises. Gotta train down so I can eat on next batch of cruises #neverlearn  Responser: Boston Marathon next?
