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The sons agree to alternate in the throne of the city , but after the first year Eteocles refuses to step down , and Polynices wages war to claim his crown .
 person: Eteocles; person: Polynices
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:
 person: Eteocles; person: Polynices