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.

Context: Katy Perry rocking the Wii safety strap during the halftime show. #SuperBowl Funny Or Die (@funnyordie) February 2, 2015 Question: who was wearing a safety strap? Answer: katy perry
yes

Context: Very Cool RT "@ABRVTour: The #TripleCrown Trophy is in the building at #Belmont #CaliforniaChrome #TripleChrome Chip McGaughey (@Chip_McGaughey) June 4, 2014 Question: where is the triple crown? Answer: in the building
yes

Context: Adam Caplan @caplannfl#Saints are having QB Chase Daniel in for a visit today, source said.3/19/2017, 8:41:13 PM Question: how many knives does 1 black man have? Answer: zero

no