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: It was an honor to be the guest speaker at the College & Career Mentor Conference presented by the Porterville Unified School District. What great students. Definitely future leaders of America.  Responser: Ah the good old days as professor Kopi [[PHOTO]]
