662
His parents are divorced long time ago and he has n't visited his father who is living in  Tehran  for a very long time until suddenly  his  niece visits him and informing his father's hospitalization in Tehran and persuade him to visit his father .
 None
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:
 NA: Tehran, his