TASK DEFINITION: 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.
PROBLEM: Is finding it impossible  to sleep with taylor... And i need sleep 

SOLUTION: negative

PROBLEM: Off to bed.. Lets hope iPhone OS 3.0 is released tomorrow! 

SOLUTION: positive

PROBLEM: Thats cool! Where at? 

SOLUTION:
positive