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: Did Occupy Wall Street start this whole movement to ease income inequality? Pretty impressive for a group dismissed as basement slackers.  Responser: I remember seeing Geraldo being kicked out from OWS while trying to interview protesters.
