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: My #FightWashington Bus Tour is coming to life! See you Saturday! www.MattGaetz.com/bus-tour/  Responser: Nice bus..........It should be able to make the trek to DC easily...
