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 final debate in Superior tonight. Looking forward to the final push to Election Day. Let's Roll!  Responser: Good luck Mr Duffy. Stay true to your beliefs!
