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: New America Foundation reports that bulk collection of phone records by #NSA "has had no discernible impact on preventing acts of terrorism"  Responser: Setting the stage for singling out those the Government deems as dangerous for trumped up charges and visits late at night by Gestapo Boots.
