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: Last week I officially filed to run for reelection to the United States Senate. Sixteen other candidates filed as well, and I am going to be working as hard as I can over the next six months to earn the support of Washington state voters. Can I count on your help?  Responser: I think that all in all you've been a champ for progressive values, and very effective at working to bring Washington state to a better place. You have my support.
