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 for all your support as we closed out our 3rd quarter fundraising period yesterday and your help in reaching over 4,000 likes on Facebook.  Responser: Great to see you today in Cedartown! Go Tom, GO! :D
