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: Lots of #laughs with Lucie Safarova and CoCo Vandeweghe  Responser: I love you with Lucie #teambucie Win it all @ Miami Open [[STICKER]]
