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: LAST DAY of the campaign #SPNFamily. Thank you for helping us spread the cheer! #HappyHolidays to you and yours. #WeDidGood Check it out: http://bit.ly/trio_ja  Responser: Paula, this is everything they did with the money for the shirts. Cool huh.
