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: Seems crazy that it is this sunny! I'm sitting here in my room chillin' &amp; revisin' 
Example Output: positive

Example Input: @tommcfly have a great time in rio 
Example Output: positive

Example Input: My iphone update seems to have killed my phone   aaarrggghh
Example Output:
negative