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: #BREAKING: Man who killed 2 TV journalists in Virginia this AM has died. He was found inside his car with self inflicted gunshot wound. @NBCLA  Responser: thank fucking god, my tax money wont pay for his worthless ass in jail for 40 years...
