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: Enjoyed welcoming students from Annawan High School yesterday to the U.S. Capitol and got the chance to congratulate the school on winning the Class 1A girls high school basketball state championship earlier this year.  Responser: I'm really glad as a Teacher sharing with you like a great Congresswoman of United State.
