8831
The presidencies of both the American League and the National League were eliminated in , and their duties were absorbed by the office of the Commissioner .
 organization: American League; organization: National League
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: American League, National League 
Answer:
 organization: American League; organization: National League