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: Great visits to Hudson and Superior on my Wisconsin Fresh Coast Water Tour to talk about our economy, job creation and more.  Responser: 65 Things We Know About NSA Surveillance That We Didn't Know a Year Ago. READ MORE: https://www.facebook.com/photo.php?fbid=10201772493348704 Demand Clemency for Edward Snowden: http://bit.ly/1AcTEiS
