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: Thanks for having me in the Oracle Social suite last night BNP Paribas Open! It was such a pleasure meeting these great people and answering some fun questions!  Responser: Great pic, Shelby!!! Good luck from me and everyone at Marina Sports Medicine!!!
