In this task, you are given a text from tweets. Your task is to classify given tweet text into two categories: 1) positive, and 2) negative based on its content.

Example Input: @EricaLeigh777 she said she isn't coming back... so i have no idea. I hope everything is ok with her &amp; bart. it's really sad... 
Example Output: negative

Example Input: Fireworks! 
Example Output: positive

Example Input: R.I.P. Kenny Rankin. One of the greats ... sad 
Example Output:
negative