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: Toll rises to 50 dead, 53 injured in the #PulseNightclubShooting. This is now the deadliest mass shooting in American History. I'll see you from Orlando tonight on ABC World News Tonight with David Muir. Truly heartbreaking.  Responser: ON DEMOCRACY NOW.ORG THE SHOOTER WAS REPORTED SAYING: "STOP BOMBING MY COUNTRY"... WHAT'S THAT MEAN 2 U?
