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.

Fitting Cu EPR signals with easyspin...it's killing my laptop 
negative

@metiche76 I love purple chinchillas, so I'll definitely have to accept your friend request 
positive

Tomorrow's agenda? Church, lunch, NO DOUBT concert  I am much more excited than I anticipated!!!!

positive