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 20th Anniversary to Fox News!  Responser: Americans spent over $4 billion on porn last year. Yet everyone but Trump holds women in high regard....hypocrites. Even he can't afford that bill -so someone's lyin'. #TRUMP2016
