235050
In 1983 he received his doctorate at the University of Amsterdam on a thesis titled Imperialism and Class Formation in the North Atlantic Area , supervised by Gerd Junne .
 organization: Amsterdam
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Amsterdam 
Answer:
 organization: Amsterdam