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: This weekend, I stopped at Caterpillar Inc. in Peoria to discuss how Cuba represents a new market for family farmers and the agriculture industry: bit.ly/1UpU7Ku  Responser: Please keep in mind the strong opportunity urban agriculture can have on boosting job creation on Peoria's Southside.
