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: Join me on 10/22 for a campaign event as we watch President Barack Obama's 3rd and final debate: http://bit.ly/QLpkmF  Responser: i would love to attend i will be watching at home with family and friends Maria you got my vote Obama/Biden 2012 Thank you very much Maria
