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: IAAF presented our WR Relay Team With the Performance of the Year Award at the 2012 Gala here in Barcelona. It's an honor to receive such an award. Looking forward for more to come.  Responser: Congratulations Bianca! Ridgeland is very proud if you!
