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: Get this: China sounds an alarm over North Korea nuclear program!  Responser: Earlier this year. That figures. Another thing Obama hides from the Americans.
