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 want to wish everyone a very Merry Christmas. As we gather with family, friends, and loved ones, please remember to have a safe, happy, and healthy holiday season.  Responser: Hi Richard, from the Neal's in Florida, same to you and your family!
