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Qualifying is one of the most nerve-racking experiences for an IndyCar Series driver  IRL  president  Brian Barnhart  said on Tuesday .
 top members employees: IRL, Brian Barnhart
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: IRL, Brian Barnhart