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: My new piece up at The New York Times about why civilian control of the military is so important and why I do not think Congress should be ignoring the law and principles of our democracy that have served us well for centuries for President-Elect Donald Trump.  Responser: If National Security Act of 1947 is waived to approve Gen. Mattis, then waiver = Trum(an + p).
