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: Thank you Eurosport UK for our 1st grand slam together! & Thanks to all my amazing fans for your love & support! #ThrowbackThursday  Responser: C'est nous qui te disons MERCI Mary! Pour tout.
