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: Happy 22nd anniversary of the Americans with Disabilities Act - a law that changed my life well before I ever knew I would need it. - Tammy  Responser: It's important that we have a rep who doesn't badmouth vets.
