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Major League Baseball decided to extend the Championship Series in both leagues from its best-of-five ( 1969 – 1984 ) to the current best-of-seven format starting with this year , and it proved pivotal in the outcome of the ALCS .
 organization: Major League Baseball
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Major League Baseball