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".

Example Input: Tweet: Still waiting for the complementary hospitality tickets for tomorrow at Silverstone.  We've only got pikey grandstand tickets  #fb Question: is it a positive tweet?
Example Output: no

Example Input: Tweet: Ooh look who seems to be working tonight... way to go twitter!  Question: is it a negative tweet?
Example Output: no

Example Input: Tweet: watching merlin  its so good! buy does anyone know if its australian? probably not australian D; Question: is it a positive tweet?
Example Output:
yes