11737
which was sung by South African singer  Letta Mbulu  ( although Swahili is only commonly spoken on the east coast of  Africa  ) .
 countries of residence: Letta Mbulu, Africa
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:
 countries of residence: Letta Mbulu, Africa