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On October 20 2009 at the insistence of Hikind and twelve other New York State and City officeholders  American Express  CEO  Kenneth Chenault  American Express rescinded its Merchants Agreement with prominent Holocaust denier David Irving .
 top members employees: American Express, Kenneth Chenault
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:
 top members employees: American Express, Kenneth Chenault