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Before becoming CEO , Rich was BCG ’s chairman for North and South America since 2009 and head of the New York Metro office system starting in 2000 .
 organization: BCG
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: BCG 
Answer:
 organization: BCG