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: Again, I think parts of #IranDeal are groundbreaking. However, #Iran can't propose to join the international community while it holds and tortures 4 American citizens including a #Marine as leverage in FLAGRANT violation of the most basic of international norms. #FreeAmirNow  Responser: Even if they sign the agreement,, they will violate it when ever they decide it is to their advantage to do so
