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: This is key: @DrFriedenCDC says viral hemorrhagic fever has never been transmitted in the USA. Our health system can isolate. — Mark Leon Goldberg (@MarkLGoldberg) September 30, 2014 Question: did these people love this person? Answer: our hearts literally hurting
[EX A]: no

[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: Floods triggered by torrential rain wash away a building and a truck in the autonomous region of Tibet CNN Weather Center (@CNNweather) July 10, 2017 Question: what do you get with a beverage on june 3rd? Answer: a free doughnut
[EX A]:
no