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: At DFW airport changing planes to come home - standing with a plane full of Okies watching the Thunder on the airport monitor. Heartbroken but ready for game 6.  Responser: I'm on your plane and I have a solution to the buffet crisis. I'll catch you in okc
