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: Yay! "Chronic," the movie I did with Tim Roth last summer, directed by the incredible Michel Franco, is going to Cannes! http://www.hollywoodreporter.com/news/cannes-unveils-additional-official-selection-790979  Responser: Enjoy! and be careful!
