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: To clarify, I was referring to Pres Obama's national security decisions that have led to rise of #ISIL, not to the President himself— John McCain (@SenJohnMcCain) June 16, 2016 Question: who did people think john mccain was referring to? Answer: president himself
answer:
yes


question:
Context: Flags at half mast for Whitney Houston? 4 Marines and 1 Navy serviceman assassinated by a terrorist on our soil.....nothing?— Curt Schilling (@gehrig38) July 20, 2015 Question: who is going to perform more tests? Answer: the state lab team
answer:
no


question:
Context: Some grabbed their mothers' skirts, others wore their girlfriends'. #EteğiniGiyTaksimeGel #ozgecanicinminietekgiy Zambak Tukan (@ZambakTukan) February 21, 2015 Question: what is dustin johnon's son's name? Answer: tatum
answer:

no