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The  Peter G. Peterson  Foundation is an American foundation established in 2008 by Peter G. Peterson former US Secretary of Commerce and cofounder of the  Blackstone Group  an American-based financial-services company .
 founded by: Peter G. Peterson, Blackstone Group
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:  Peter G. Peterson, Blackstone Group 
Answer:
 founded by: Peter G. Peterson, Blackstone Group