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: Nancy Reagan will be greatly missed. She and President Reagan were true patriots who led a great political revolution.  Responser: they both made us proud, and our country was fortunate to have had these two representing us on this planet
