In this task, you are given a context tweet, a question and corresponding answer of given question. Your task is to classify given passage into two categories: (1) "yes" if the given context is useful in answering the question, and (2) "no" if the given context is not useful.
--------
Question: Context: Katy Perry's Halftime in a nutshell Travis Lattner (@TLatt7) February 2, 2015 Question: what is this twitter page currently discussing Answer: katy perry's halftime show

Answer: yes


Question: Context: The results are in. Unfettered free trade has been a disaster for working Americans. It is high time we ended our disastrous trade policies.— Bernie Sanders (@SenSanders) August 24, 2015 Question: who is trade a disaster for? Answer: working americans

Answer: yes


Question: Context: No, I'm not running for Congress. Happy 4/1!But Jon Ossoff is on 4/18. Help him win at . Let's flip Congress in '18 George Takei (@GeorgeTakei) April 1, 2017 Question: whose stage was brad pitt on? Answer: frank ocean's

Answer:
no