2622
The Gulf state of Qatar will buy a 17 percent stake in  Volkswagen  a key shareholder and its chief executive  Martin Winterkorn  said on Thursday .
 top members employees: Volkswagen, Martin Winterkorn
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:  Volkswagen, Martin Winterkorn 
Answer:
 top members employees: Volkswagen, Martin Winterkorn