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: Be sure to watch the documentary about me called "Tennisography" on Sunday December 30 at 7pm EST on The Tennis Channel.  Responser: Will it be online too? Don't have tennis channel now :(
