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.

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

Ex Output:
positive

Ex Input:
All I can see is giant cigarettes...It's getting really difficult.

Ex Output:
negative

Ex Input:
back to work!

Ex Output:
positive