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In 2008 Avidar visited  Sierra Leone  at the invitation of the Sierra Leone government and met President Dr Ernest Bai Koroma and Vice President  Samuel Sam-Sumana  and the Liberian Minister for Mines .
 employee of: Sierra Leone, Samuel Sam-Sumana
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Sierra Leone, Samuel Sam-Sumana 
Answer:
 employee of: Sierra Leone, Samuel Sam-Sumana