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Sentiment was helped by moves by Japanese financial giants to take big stakes in troubled Wall Street titans while US tycoon  Warren Buffett  's  Berkshire Hathaway  agreed to invest five billion dollars in Goldman Sachs .
 founded by: Warren Buffett, Berkshire Hathaway
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:  Warren Buffett, Berkshire Hathaway 
Answer:
 founded by: Warren Buffett, Berkshire Hathaway