instruction:
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: You don't have to search hard to figure out why #GoogleGlass is being retooled: Adweek (@Adweek) January 16, 2015 Question: how long was he friends with kesha? Answer: for many years.
answer:
no

question:
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
answer:
yes

question:
Context: PA Royal Photographer John Stillwell was invited to take the photographs of this happy family moment. Kensington Palace (@KensingtonRoyal) March 7, 2016 Question: who will not return? Answer: #18 peyton manning
answer:
no