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In 2008 the  San Francisco  Business Times reported that  Levi Strauss Co.  may consider moving the headquarters out of San Francisco once the lease in Levi's Plaza expired on December 31 2012 .
 San Francisco, Levi Strauss Co.
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 San Francisco, Levi Strauss Co.