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: Please check out my latest Huffington Post piece about Rachael Ray's visit to Washington DC last week to help me lobby my colleagues for healthier lunches in schools.  Responser: Rachael Ray is such a nasty person why send her down there?
