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".

Ex Input:
Tweet: My Twitter Mobile is back... but now my tweetdeck is dead  Stupid World! Question: is it a positive tweet?

Ex Output:
no


Ex Input:
Tweet: ~what a bore!!  Question: is it a positive tweet?

Ex Output:
no


Ex Input:
Tweet: Man this twitterfail re: followers blows, its so depressing getting people to sign up only for the number to drop for no reason  Question: is it a negative tweet?

Ex Output:

yes