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: The Los Angeles Sun Times calls STAY FILTHY, CALI "a unique, viral way of getting the word out about water conservation" Watch #StayFilthyCali ep 3 "The BreakUp" a 2 min PSA for the drought starring Samm Levine, Annika Marks & Bruce Campbell  Responser: That was hysterical
