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When the National League of Professional Base Ball Clubs was established in 1876 , its founders judged that in order to prosper , they must make baseball 's highest level of competition a " closed shop " , with a strict limit on the number of teams , and with each member having exclusive local rights .
 organization: National League of Professional Base Ball Clubs
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: National League of Professional Base Ball Clubs 
Answer:
 organization: National League of Professional Base Ball Clubs