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: Won my first match today at the 100k in France! Beat the 8 seed Paula Ormaechea 7-6, 6-4!  Responser: Way to go! What tournament is this?!
