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: Stay strong, Vicky!  Responser: Wishing you successful treatment and speedy recovery so that you can return back to your promising tennis career in the best of health!
