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She then went to the University of Amsterdam , where she initially studied economics between 1985 and 1986 , but switched her field of study in 1986 to history , in which she obtained an M.A. degree in 1991 .
 University of Amsterdam
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 University of Amsterdam