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The 1990 – 91 Rugby Football League season was the 96th ever season of professional rugby league football in Britain .
 organization: Rugby Football League
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: Rugby Football League 
Answer:
 organization: Rugby Football League