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After post-doctoral position with John Jacob Abel at Johns Hopkins University Medical School ( 1927-1928 ) he traveled to Europe as National Research Council Fellow in 1928-1929 where he worked with  Max Bergmann  at the  Kaiser Wilhelm Institute for Leather Research  in Dresden and with George Barger at the University of Edinburgh Medical School .
 employee of: Max Bergmann, Kaiser Wilhelm Institute for Leather Research
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:
 employee of: Max Bergmann, Kaiser Wilhelm Institute for Leather Research