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Lieutenant General Seretse Khama  Ian Khama  ( or Ian a ; born 27 February 1953 ) is a  Botswana  politician who has been the President of Botswana since 2008 ; he is also the Paramount Chief of the Bamangwato tribe .
 countries of residence: Ian Khama, Botswana
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: Ian Khama, Botswana