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: @andijonas2009 very pretty pic...i'm sooo jealous...i'm not going anywhere good this summer!

SOLUTION: negative

PROBLEM: @ryanwagner It's still a bit off in the distance, but people have been asking for a teaser.

SOLUTION: positive

PROBLEM: Spent yesterday in Delaware. Apparently I'm going to spend today in hell. I <3 migraines.

SOLUTION:
negative