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Pächt studied art history in Vienna , and received his doctorate in 1925 with a dissertation on medieval painting , supervised by Julius von Schlosser .
 person: Pächt; organization: Vienna; person: Julius von Schlosser
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Pächt; organization: Vienna; person: Julius von Schlosser