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: Attending the Rego Park Jewish Center's 77th annual Dinner Dance tonight.  Responser: That's a great library for young generation to get knowledge by reading.Thanks.

Positive