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The 19th century World Series was considered an exhibition contest between the champion of the National League and the champion of the American Association .
 organization: National League; organization: American Association
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: National League, American Association 
Answer:
 organization: National League; organization: American Association