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: Our economy simply can't afford to have political division stand in the way of robust investments in Wisconsin science, research and innovation.  Responser: Federal grants to convert ethanol plants to produce biobutanol out of Wisconsin crops (and, ideally, hemp) would also reduce our dependence on foreign oil.
