6221
Hainan Airlines  was established in October 1989 as Hainan Province Airlines in  Hainan  the largest special economy zone in China .
 state or province of headquarters: Hainan Airlines, Hainan
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:
 state or province of headquarters: Hainan Airlines, Hainan