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: It's pretty awesome to get straight from the mountains to the coast so quickly! :D @Sochi2014 @Olmypics  Responser: you were brilliant just to be in the top ten was awesome well done BG is proud of you!
