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: Safari &amp; WebKit keeps crashing for no reason after a while. Switching to Firefox 
Example Output: negative

Example Input: #exam today 
Example Output: negative

Example Input:  sooo tired but i havent been getting sleep at all lately &gt; mom wont let me take sleeping pills cuz i might get &quot;addicted&quot; uuuuuuuugh
Example Output:
negative