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: @BSGirlsEver yeahh i just read it...good boys, nick was all day here and howie responded question  I gotta go...gOod night! Question: is it a negative tweet?

Ex Output:
no


Ex Input:
Tweet: Cops are posted up at every corner in rowlett!!!  Drive slow  Question: is it a positive tweet?

Ex Output:
no


Ex Input:
Tweet: @swiss_kris  Where did you get the upgrade from? I'm refreshing the Apple site and itunes and can't find it anywhere.   Question: is it a negative tweet?

Ex Output:

yes