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 The Guinness editors do their best to stay away from politics , though we do learn that Iran has the '' youngest voting age '' 15-year-olds can cast ballots , that Fidel Castro is the '' longest serving head of state '' and that Italy 's Silvio Berlusconi is the '' richest prime minister , '' having amassed '' a personal wealth of $ 10 billion , according to Forbes . '' 
 nationality: Silvio Berlusconi, Italy
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: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
Answer:
 nationality: Silvio Berlusconi, Italy