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: DEAR CALIFORNIA IM COMING TO TEAR THAT ASS UP (MUSICALLY) THIS FRI AND SAT. WILL BE PLAYING A SHORT SET AT THE GRAND SAN FRANCISCO FRIDAY DEC 5 AND THEN HEADLINING AN OPEN TO PUBLIC SHOW AT UCSD WITH RAPPER Junoflo , DJ ZO AND A VERY VERY SPECIAL GUEST. TIX FOR UCSD AVAIL AT UCSDBOXOFFICE.COM YAY  Responser: Maxine Reyna YOUR TWIN
