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: Yvette Nicole Brown. The nicest lady in the biz! Yvette Nicole Brown SiriusXM Radio #siriusxm #thecraigfergusonshow #biz  Responser: Yvette is the best. And everything you discussed was in a wonderfully open-minded kindhearted way. Thanks for a very funny sweet show. I learned a lot!
