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After a short time in a Civil Service office he joined the  British South Africa Police  ( the police force in Southern Rhodesia ) on  23 April 1939  .
 founded: British South Africa Police, 23 April 1939
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:
 founded: British South Africa Police, 23 April 1939