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From 1908 to 1911 Lenz studied under  Arnold Sommerfeld  at the  University of Munich  and he was granted his doctorate on March 2 1911 .
 employee of: Arnold Sommerfeld, University of Munich
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: Arnold Sommerfeld, University of Munich