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.

Q: 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

A: yes
****
Q: Context: I've been blessed to spend my life serving something more important than myself, of being a bit player in the story of America #LibertyMedal John McCain (@SenJohnMcCain) October 17, 2017 Question: how many time have the person heard despacito this summer? Answer: a million times

A: no
****
Q: Context: RT @Atlanta_Traffic: Traffic NOT MOVING on I-75 in spots btwn #Acworth & #Cartersville HEAVY snow, major crashes NWS Atlanta (@NWSAtlanta) February 25, 2015 Question: what does joss whedon believe is happening? Answer: the world is on fire.

A:
no
****