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.

Example Input: Poster: My #CNNDebate report cards: Fiorina A, Carson B+, Trump B+, Bush B, Rubio B. Full candidate report cards here.  Responser: https://www.youtube.com/watch?v=1bEdMuKq30I
Example Output: Neutral

Example Input: Poster: Check out our latest TV commercial "Captain Simone"  Responser: Senator Durbin should HAVE TO STATE WHAT WAR HE HELPS assist the CAREGIVERS. OEF/OIF not all the rest! Discrimination at it's finest
Example Output: Negative

Example Input: Poster: First hit at ROLAND-GARROS and the sun is out!  Responser: Work as hard as you can Victoria.Persevere ! I am an old tennis player. Before you know it you'll get there.
Example Output:
Positive

