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: As a Citizen, I am wondering why flags are not flying at half staff in wake of #Chattanooga - maybe I'm missing something but service members and law enforcement gunned down for no other reason than wearing a uniform seems to merit that measure of solemn respect.  Responser: I can't understand why flags weren't lowered, not very respectful to these innocent victims of this horrible tragedy
