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: Senator Ron Wyden & I are joining forces to modernize combat medical training that will provide American troops with the best care possible: http://huff.to/1GeFTTb  Responser: The unsong heroes.The combat medics
