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: Good morning from #NYC's Columbus Circle 59th St. The very latest on the #4U9525 cockpit lock-out just ahead on New Day. It's 3:45 in the east. #NewDay  Responser: https://www.facebook.com/epilepsysupports/photos/a.310632672339409.68904.294920700577273/786485104754161/?type=1&theater
