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: Great first player party of the year!  Responser: Good Luck seems to grace hard workers!! Here's to your determination and luck coming together in 2015!! I look forward to following your progress this year!! :-)
