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: Video of Elizabeth's Speech in the House of Commons earlier today pertaining to the tragic events of yesterday.  Responser: There are, indeed, atheists in foxholes. Witch hunts and inquisitions to the contrary notwithstanding...
