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After a process of building and acquiring auto dealerships , in 1996 , he formed AutoNation , which became the nation 's largest automotive dealer .
 organization: AutoNation
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: AutoNation 
Answer:
 organization: AutoNation