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: Congratulations to Indiana State University for winning the Missouri Valley Conference tournament today. They'll be proudly representing Indiana's 8th in the NCAA tournament.  Responser: Yes, we are in Terre Haute. See our grandson Hunter Sego--You'lll be impressed with his athletic ability as well as his passion to find a cure for diabetes.
