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Liberty  Mutual was founded in 1912 as the Massachusetts Employees Insurance Association ( MEIA ) following passage of a  Massachusetts  state law requiring employers to protect their employees with workers compensation insurance in 1911 .
 state or province of headquarters: Liberty, Massachusetts
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: Liberty, Massachusetts