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: How is it 'free' trade when workers in Mexico make $2.50 per hour? Or when workers in Ho Chi Min City, Vietnam make $149 per month on average? How can slave wages be considered 'free'?  Responser: How can "so called American" corporations do this to people>?
