9693
Last month GM Europe sought euro1 billion ( $ 1.3 billion ) in loan guarantees from the German government for Adam  Opel  GmbH which sells most of its cars in  Germany  and is the country's third most popular brand behind Volkswagen and Mercedes-Benz .
 country of headquarters: Opel, Germany
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:  Opel, Germany 
Answer:
 country of headquarters: Opel, Germany