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Major League Baseball uses a variant of interest arbitration , in which an arbitrator chooses between the two sides ' final offers , to set the terms for contracts for players who are not eligible for free agency .
 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: Major League Baseball 
Answer:
 organization: Major League Baseball