1147
American Eagle the brand is composed of two FAA and DOT certificated regional airlines American Eagle Airlines based in Fort Worth Texas ;  Executive Airlines  based in Carolina  Puerto Rico  and other carriers contracted to fly d/b/a and with American Eagle branding and livery .
 country of headquarters: Executive Airlines, Puerto Rico
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: Executive Airlines, Puerto Rico