237514
Konstantin Jovanović finished a classical high school in Vienna and graduated from the Zürich Polytechnic in Switzerland in 1870 with honours .
 Konstantin Jovanović, Vienna, Zürich Polytechnic, Switzerland
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Konstantin Jovanović, Vienna, Zürich Polytechnic, Switzerland