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The Head of state of The republic of  Cameroon  are Mbida Prime Minister of eastern Cameroon between 1957 and 1958 Ahmadou Ahidjo President of the federal Republic of Cameroon 1960-1972 and  Paul Biya  1982-present President of the Republic of Cameroon .
 Cameroon, Paul Biya
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 Cameroon, Paul Biya