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 options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  President, Giorgio Napolitano 
Answer:
 title of person: President, Giorgio Napolitano