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: On the Red Carpet. Celebrating 100 Years of Track and Field. 1912-2012. IAAF Gala. Barcelona.  Responser: Elegant. Stunning. This is a look that commands respect.
