5876
Over the past several years he has given a blindfolded simultaneous exhibition for all-comers at the annual  Berkshire Hathaway  shareholder meeting in Omaha Nebraska headed by CEO  Warren Buffett  and Vice-Chairman Charlie Munger .
 top members employees: Berkshire Hathaway, Warren Buffett
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: Berkshire Hathaway, Warren Buffett