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: Michelle from #TeamSinema taught Arizona women how to run a winning campaign at yesterday's Emerge Arizona training. #GSD  Responser: And she did a great job! Thanks, Michelle - so thankful for this Emerge experience!
