Question: How long has the show blue bloods been on tv?
Disambiguated questions and answers: question: How long has the show blue bloods been on tv in term of year?
How long has the show blue bloods been on tv in term of season?
How long has the show blue bloods been on tv in term of episode?
answer: 10
10
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Natural Questions answer: September 24 , 2010 (from the Wikipedia article "Blue Bloods (TV series)")