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: I want to thank everyone for your posts on SOPA and I appreciate hearing your thoughts on this issue. Please know I have concerns about the legislation and I do not support SOPA in its current form; it could infringe on first amendment rights.  Responser: ok now how about the ndaa you voted for?
