15057
Once Russia's largest oil producer  Yukos  became the focus of a series of tax fraud inquiries from 2003 that have since bankrupted the company and left its founder  Mikhail Khodorkovsky  in jail .
 founded by: Yukos, Mikhail Khodorkovsky
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:  Yukos, Mikhail Khodorkovsky 
Answer:
 founded by: Yukos, Mikhail Khodorkovsky