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: Throwback Thursday: Take an in-depth look at Election Day 2014.  Responser: Voting yes on Auditing the FED is the best thing you could do... Next time, I hope you will.
