9279
In June 1870 Rockefeller formed  Standard Oil  of Ohio which rapidly became the most profitable refiner in  Ohio  .
 state or province of headquarters: Standard Oil, Ohio
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: 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:
 state or province of headquarters: Standard Oil, Ohio