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Dr. Hermann M. Biggs , a towering figure in the history of public health who had trained at Bellevue Hospital Medical College and studied in Germany , wanted to bring to America the revolutionary work being done abroad by Louis Pasteur and the German scientist Robert Koch , who discovered the micro-organism that caused cholera .
 nationality: Robert Koch, Germany
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: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
Answer:
 nationality: Robert Koch, Germany