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: WIBW reported about my visit to Meals on Wheels last week and our efforts to raise awareness for March for Meals!  Responser: http://kcur.org/post/medicaid-expansion-hearing-brings-standing-room-only-crowd-topeka
