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".

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

A: yes
****
Q: Tweet: Just downed four bottles of water. Urine = too clear to see. Me = refreshed.  Question: is it a negative tweet?

A: no
****
Q: Tweet: Has anyone seen Brian? I've lost him  Question: is it a negative tweet?

A:
yes
****