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: The President & Senate Democrats have a choice: delay Obamacare and negotiate, which is what Americans want, or continue obstructing.  Responser: Congressman Cassidy you have my support and about 90 % of my constituents support you also!!!
