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: Welcome to all the Kansans in DC today for the March for Life. I'm working from Kansas today, but stay warm out there!  Responser: That's right, Lynn... Support our March for Lifers!!
