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In 2009 , Bergsten made the following arguments for such a relationship : Zbigniew Brzezinski has been a vocal advocate for the concept .
 person: Bergsten; person: Zbigniew Brzezinski
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: Bergsten, Zbigniew Brzezinski 
Answer:
 person: Bergsten; person: Zbigniew Brzezinski