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 what #airpollution looks like. #DelhiSmog today. Smell of burning in the air. Getting that choking feeling. #delhipollution Manimugdha Sharma (@quizzicalguy) November 5, 2016 Question: what city is the poster referring to? Answer: delhi
[EX A]: yes

[EX Q]: Context: Senator Bob Corker "begged" me to endorse him for re-election in Tennessee. I said "NO" and he dropped out (said he could not win without...— Donald J. Trump (@realDonaldTrump) October 8, 2017 Question: what chat was this author partaking in? Answer: #cnnafrica
[EX A]: no

[EX Q]: Context: Jackie Evancho's album sales have skyrocketed after announcing her Inauguration performance.Some people just don't understand the "Movement"— Donald J. Trump (@realDonaldTrump) January 4, 2017 Question: who's album sales are increasing? Answer: jackie evancho
[EX A]:
yes