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: San Francisco!! I will be performing at CAAMFest this Friday, March 13th at Directions in sound! Other performances by Suboi CHOPSmusic, vinroc and Kronika - get tix at CAAMFest.com!  Responser: Morgen Depenthalplease go for meeee
