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 Second Honorary Host - The Honorable Alexis Herman was the first African American to serve as Secretary of Labor for the United States.  Responser: I met her when I attended Howard University. What an amazing woman!
