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: Women United for A Promise to Keep - DC Fundraiser  Responser: Hello Soror, I saw you last night at President Obama's speech...you made me proud and the entire sorority of DST
