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: Remembering the brave Americans who lost their lives in the attack on Pearl Harbor 73 years ago today. Thank you to all who have served to protect our country and our freedoms.  Responser: Thank you Senator elect Ernst.
