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Early life and career Schwan studied economics at the universities of Innsbruck , York and Oxford , graduating in 1991 .
 Schwan, Innsbruck, York, Oxford
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Schwan, Innsbruck, York, Oxford