5593
de  ( or ADM ) is the main airport authority in Greater  Montreal  headquartered in Suite 1000 of the Leigh-Capreol Place ( French : place Leigh-Capreol ) in Dorval Quebec .
 city of headquarters: de, Montreal
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  de, Montreal 
Answer:
 city of headquarters: de, Montreal