TASK DEFINITION: In this task, you are given a text from tweets and a boolean question whether this tweet has positive sentiment or negative sentiment. Your task is to generate answer "yes" when the tweet has that particular sentiment, otherwise generate answer "no".
PROBLEM: Tweet: I am totally lost no Sox or NBA Finals Or Stanley Cup to watch tonight.  Question: is it a negative tweet?

SOLUTION: yes

PROBLEM: Tweet: HTC Hero is here (in europe   ) [Link] Question: is it a negative tweet?

SOLUTION: yes

PROBLEM: Tweet: Another week... Another leak. This time is build 7232. Visual change: new default wallpaper. Betta fish shelved  Question: is it a negative tweet?

SOLUTION:
no