7513
The flight which was inaugurated here on Friday and includes a stop in Damascus Syria is operated in a code-share agreement by the Venezuelan state-controlled airline Conviasa and  Iran  's national carrier  Iran Air  .
 country of headquarters: Iran, Iran Air
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:
 country of headquarters: Iran, Iran Air