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: 4/4/13 FISCHER'S "NOTE FROM WASHINGTON" - The Worth of Water  Responser: Please: no pipeline, no SS cuts, no filibuster. TY
