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: PRESS RELEASE | Stivers Reaction to the Obama Administration's Decision to Reopen White House for Public Tours  Responser: If the other guys worked as hard as Steve Stivers, we wouldn't be in this mess! You think it's over? It isn't!
