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: It's time to be bold, and it's time to be revolutionary: we must create a Consumer Financial Protection Agency that will protect consumers and regulate the worst actors in our financial system.  Responser: Yes. We must do something to stop the piracy by credit card companies. They're killin us with arbitrary interest rate hikes.
