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: The U.S. Navy has confirmed to Fox News that an unarmed Iranian drone flew "directly over" the USS Harry Truman  Responser: What will our government do? Let's have a talk with them. That seems to work so well.
