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: Thank you everyone who came to our #TeamSinema #HappyHour at North Mountain Brewing Company. See you next month!  Responser: Had a great time visiting with you!
