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: Quite satisfied with my first win in Rome and chatting to the media post match. Hope everyone has a lovely day!  Responser: Madison, This week is the beging of your 2015 Glory, Rome plus TWO MAJORS
