355971
ChB. , MD , M.P.H. , FRCPC , FACP , Professor of Epidemiology ( emeritus ) , University of Toronto since 1982Born in Dewetsdorp , Orange Free State , Republic of South Africa , 21 March 1916 Son of Joseph Daniel and Georgina Henrietta Guest ( Harding ) le Riche Educated at University of the Witwatersrand .
 Toronto, Republic of South Africa, Harding, le Riche, University of the Witwatersrand
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Toronto, Republic of South Africa, Harding, le Riche, University of the Witwatersrand