3074
The capital hosts the headquarters of Banque du Liban  Lebanon  's central bank the Beirut Stock Exchange the head office of Lebanon's flag-carrier  Middle East Airlines  the United Nations Economic and Social Commission for Western Asia the Union of Arab Banks and the Union of Arab Stock Exchanges .
 country of headquarters: Lebanon, Middle East Airlines
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: Lebanon, Middle East Airlines