1600
Hu will also pay state visits to Italy from July 5 to 8 at the invitation of Italian  President   Giorgio Napolitano  and to Portugal from July 10 to 11 as a guest of Portuguese President Anibal Cavaco Silva .
 title of person: President, Giorgio Napolitano
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: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 title of person: President, Giorgio Napolitano