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: Today, I am proud to receive the Spirit of Enterprise Award from Nello Ruscitti, Chairman of the Havasu Chamber of Commerce.  Responser: Congratulations, Paul and thank you!
