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Iraq  's Ahmad Chalabi an influential Shiite and head of the opposition  Iraqi National Congress  said the Baghdad conference was long overdue and expressed hope it would help in building international support for the Iraqi government .
 country of headquarters: Iraq, Iraqi National Congress
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: Iraq, Iraqi National Congress