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: "Hard to believe it's been 30 years since I married the love of my life. Happy Anniversary Tom." ~ Maggie  Responser: Happy Anniversary Maggie and Tom!!! How cute is that!!!!
