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: One more week of off season training--the year has gone by fast! My schedule for the beginning of 2014: Shenzhen, Sydney, Aus Open, Pattaya. I will play doubles with Galina Voskoboeva in Australia. X  Responser: Are you playing in singles quallies in Sydney Vania? Look forward seeing you anyway:)
