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After studies with Otto Salvisberg and Karl Moser at the ETH Zurich , he worked as an architect in Zurich , initially for Karl Egender .
 Karl Moser, ETH Zurich, Zurich, Karl
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Karl Moser, ETH Zurich, Zurich, Karl