4730
 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: 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: Pierluigi Collina, Italy