6704
Blackstone  was founded in 1985 as a mergers and acquisitions boutique by Peter G. Peterson and  Stephen A. Schwarzman  who had previously worked together at Lehman Brothers Kuhn Loeb Inc .
 founded by: Blackstone, Stephen A. Schwarzman
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:
 founded by: Blackstone, Stephen A. Schwarzman