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: Live in the L.A. Area? Come hear me talk #beauty and #bosslife at #SimplyStylistLA! Use the code 'TYRA' to get 20% off your ticket NOW! Simply Stylist http://bit.ly/1UAwWM4  Responser: Sorry to have missed it
