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In Italy , where voters went to the polls on Sunday and yesterday , the opposition coalition led by Romano Prodi has talked of changing one of the few steps taken by Prime Minister Silvio Berlusconi to raise the retirement age gradually and thus ease by a little the burden on the government pension system .
 nationality: Romano Prodi, Italy; 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: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
Answer:
 nationality: Romano Prodi, Italy; nationality: Silvio Berlusconi, Italy