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: All new episode Tomorrow!!  Responser: Just seen it i am so glad ty and amy are back and so sorry for lu and peter i hope they will be fine at the end

Positive