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: Hope to see you at the 12th District Dems meeting Thursday, 4/28 at 7 p.m. I will be introducing Mark Hackel as Speaker. Plumbers Local 98 in Madison Heights.  Responser: It has to be the same day as the 1st round of the NFL draft...
