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: Happy President's Day! Let's stop and take a moment to honor our country's forefathers and leaders who helped to build our great nation. - EJM  Responser: Nitpick ... That should be punctuated differently: Presidents' Day.
