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.

[EX Q]: Context: Environmental Racism + Indifference = Lead in the Water & Blood...The Poisoning of Flint's Water 0 #FlintWaterCrisis Cornell Brooks (@CornellWBrooks) January 24, 2016 Question: what city is mr. brooks talking about? Answer: flint, mi
[EX A]: yes

[EX Q]: Context: Boom, boom, BOOM! Katy Perry broke the halftime show record with 118.5 million viewers. The game had a record 114.4M Brian A. Hernandez (@BAHjournalist) February 2, 2015 Question: how many viewers did the halftime show have? Answer: 118.5 million.
[EX A]: yes

[EX Q]: Context: LeBron James and agent meeting w/ Heat will include Pat Riley and assistant GM Andy Ellsburg, the salary cap expert, source tells Yahoo. Adrian Wojnarowski (@WojYahooNBA) July 9, 2014 Question: who else is in meeting with heat and lebron james? Answer: pat riley and gm assistant andy ellsburg.
[EX A]:
yes