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: @Tamm  - Senna-the-unblocker is yours to borrow as long as I have her back by ... oh, say - May 1st?  

SOLUTION: positive

PROBLEM: And onto more depressing things, I think i dreamt that Caley stayed up last night. Not good at all.  :p

SOLUTION: negative

PROBLEM: sem tempo para o twitter/ 8760 hours ago?  but they don't know..

SOLUTION:
negative