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: Always great to be back on the set with my friend @steve01450. Good conversation with Rep. Lance regarding #Bridgegate indictments and guilty plea.  Responser: Disappointed that finding answers about Bridgegate seems to be more important than finding answers about Benghazi-gate.....where are our priorities?
