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Former southern  California  elements reorganized on 23 August-6 October 1921 in the  California National Guard  as the 160th Infantry and was assigned to the 40th Division ; Headquarters was Federally recognized on 31 January 1922 at Los Angeles .
 state or province of headquarters: California, California National Guard
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  California, California National Guard 
Answer:
 state or province of headquarters: California, California National Guard