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Analysts have questioned whether  Blackstone  's decision to go public signals the zenith of the private equity boom as co-founders Stephen A. Schwarzman and  Peter G. Peterson  cash out their holdings .
 founded by: Blackstone, Peter G. Peterson
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:  Blackstone, Peter G. Peterson 
Answer:
 founded by: Blackstone, Peter G. Peterson