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: I can't wait for you to see this show, Marlon. Here's a sneak peak! Share with everyone  Responser: Congratulations, Girl!!! SO proud of you
