9087
The refining process led to the development of the steel industry in  Luxembourg  and founding of the  Arbed  company in 1911 .
 country of headquarters: Luxembourg, Arbed
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:  Luxembourg, Arbed 
Answer:
 country of headquarters: Luxembourg, Arbed