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: Happy to be back on court! 2016 season I'm almost ready for ya ;)  Responser: So sad we didn't get to see you in Brisbane. Definitely next year. Wishing you lots of luck. Kirsty, Trevor, Riley and Sammy xx
