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: Back in LA 3 winners show with jon reep& John heffron was a blast. This weekend willbe back home at laugh factory  Responser: wish i was there ....
