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: My thoughts and prayers are with the people of Kansas City today. http://www.stltoday.com/news/local/state-and-regional/three-killed-in-shootings-at-jewish-center-senior-facility-in/article_7b2e5457-880c-5c03-999a-599124ba739e.html  Responser: So sad. Prayers to all especially the Jewish people.
