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But by covering only half of the field , the best referees might be able to extend their careers five more years so that exceptional ones , like Italy 's legendary Pierluigi Collina , would not be forced to hang up their whistles at the top of their games .
 nationality: Pierluigi Collina, 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: Pierluigi Collina, Italy