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".

Tweet: @winsomewords umm... close safari and open it again perhaps?  Question: is it a negative tweet?
yes

Tweet: Yuck!  @nattyluv's beer tastes likes Dimetapp.    Raspberry Hefe.  Why @Schlafy? Question: is it a positive tweet?
no

Tweet: I was just informed that there will be no service up north... No Twitter for a few days  Question: is it a positive tweet?

no