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: 60 Minutes investigates "Fake News". Find out how stories that are provably false are circulated on the Internet thru social media on phoney news sites and read by millions of people.  Responser: I Always Agreed,That a Good Reporter Has To Be Partial To News and Not Be Incline To Any Party
