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: Spending Christmas with my in-laws. Happy Holidays and Merry Christmas to all! Please keep our troops in your thoughts.  Responser: Merry Christmas Tammy. Hope you are having a great holiday
