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: If anyone from my home #Sheffield can pronounce the places I've been the last few days I'd be very impressed haha! ... I can't!! Exploring #NewZealand with @anna_willcox #alongwayfromhome :D  Responser: Was on holiday in NZ a year ago, amazing place
