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: When I talk to people living in LA, some are worried and some scared, but all ask what they can do. Come find out. Join me to organize for resistance. West LA: https://www.facebook.com/events/1340958919283790/ South LA: https://www.facebook.com/events/910730185696113/  Responser: Thank you for speaking up for us!
