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: Happy Independence Day, Somalia! Fifty-five years after independence, let's celebrate Somalia's incredible progress!  Responser: Thank you Keith Ellison to celebrate with us our independence day.
