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: is working on a final for tomorrow...  Question: is it a positive tweet?

SOLUTION: no

PROBLEM: Tweet: @kiwibastard  i'm sure it's just out of ignorance. Maybe us kiwi iPhone devs should make more noise. Question: is it a negative tweet?

SOLUTION: no

PROBLEM: Tweet: @yelyahwilliams I neeeeeed tickets for ur Sunday show n Houston  sold out! I'll make u a sweet deal for tickets LOL just name it u got it Question: is it a negative tweet?

SOLUTION:
yes