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Statistics have been kept for professional baseball since the creation of the National League and American League , now part of Major League Baseball .
 organization: National League; organization: American League; organization: Major League Baseball
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 League, Major League Baseball 
Answer:
 organization: National League; organization: American League; organization: Major League Baseball