11707
After serving as the actuary to the Equity and Law life insurance company ( 1861 1873 ) he became Chief Executive ( 1873 1900 ) of the  Scottish Equitable  Life Assurance Society in  Edinburgh  .
 city of headquarters: Scottish Equitable, Edinburgh
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:
 city of headquarters: Scottish Equitable, Edinburgh