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: .@SheriffClarke: "I know [@POTUS] personally. Look, he does not have a racist bone in his body." # Fox News (@FoxNews) August 15, 2017 Question: where is flavio edreira from? Answer: brazil
no

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
yes

Context: What. A. Match. #Nadal survives an onslaught from world No.112 Tim Smyczek to prevail 6-2 3-6 6-7(2) 6-3 7-5 #ausopen Australian Open (@AustralianOpen) January 21, 2015 Question: who won the match between nadal and smyczek? Answer: nadal

yes