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: Received a warm welcome home speaking at the Women In Church meeting at Trinity Presbyterian Church. http://t.co/bsPcBpLA  Responser: Thank you, Martha! You inspired us all!
