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: Thank you, Chris Wendling, from A.F. Wendling's Market in Buckhannon, for coming to D.C. to meet with me and present me with the 2016 Thomas Jefferson Award from the International Foodservice Distributors Association.  Responser: Well deserved!! Congratulations!
