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One of Kravis ' biggest rivals  Stephen A. Schwarzman  of the  Blackstone Group  donated $ 100 million to the New York Public Library two years ago attaching his name to the institution's central Fifth Avenue building .
 top members employees: Stephen A. Schwarzman, Blackstone Group
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: Stephen A. Schwarzman, Blackstone Group