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: think i have swine flu 
Example Output: negative

Example Input: @MedifastPr Btw I lost 17lbs on Medifast. Its helped me alot. And I love what I'm eating...that's very important to me: Gotta be TASTY 
Example Output: positive

Example Input: finally got to claiming my facebook username. there's only one frankinguyen out of 200m users. thank god for that 
Example Output:
positive