The Guinness editors do their best to stay away from politics , though we do learn that Iran has the '' youngest voting age '' -LRB- 15-year-olds can cast ballots -RRB- , 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 . ''
Silvio Berlusconi /people/person/nationality Italy
DT NNP NNS VBP PRP$ JJS TO VB RB IN NNS , IN PRP VBP VB DT NNP VBZ DT '' JJS NN NN '' -LRB- NNS MD VB NNS -RRB- , WDT NNP NNP VBZ DT '' JJS VBG NN IN NN '' CC IN NNP POS NNP NNP VBZ DT '' JJS JJ NN , '' VBG VBN '' DT JJ NN IN $ CD CD , VBG TO NNP . ''
Silvio Berlusconi
PERSON
Italy
LOCATION
/people/person/nationality