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: Possible evidence tampering in IRS targeting scandal **Senior IRS lawyer admits in a sworn declaration that Lois Lerner's BlackBerry was intentionally destroyed after Congress began investigation  Responser: lets cut the shit and round these people up this is getting past sickening
