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: A new day in American Television. Don't miss it Tonight on OWN: Oprah Winfrey Network  Responser: Omgosh what an amazing show. Can't wait till next episode. Great job GregAlan. #greenleaf
