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: It seems there's movement from many in #GOP to join #Dems to move on #immigrationreform. What would you like to see in new US policy?  Responser: I would like to see assurance that new immigrants will not be a burden on the US Taxpayers.
