4089
July 8 2003 -- A  Sudan Airways  flight that reported technical problems after takeoff crashed about three miles from the Port  Sudan  airport killing 116 people .
 country of headquarters: Sudan Airways, Sudan
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: Sudan Airways, Sudan