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Lockheed Martin  Corp.'s chairman  Robert J. Stevens  urged European regulators to continue to promote transparency and competition warning that the idea that protectionism would strengthen markets is misguided .
 top members employees: Lockheed Martin, Robert J. Stevens
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:  Lockheed Martin, Robert J. Stevens 
Answer:
 top members employees: Lockheed Martin, Robert J. Stevens