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A hand grenade was the device that prompted a bomb scare outside  Botswana  President  Ian Khama  's offices last week police said Tuesday adding they were investigating how the device landed there .
 countries of residence: Botswana, Ian Khama
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: Botswana, Ian Khama