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He had three known sons : Kim Jong-nam , Kim Jong-chul and Kim Jong-un .
 person: Kim Jong-nam; person: Kim Jong-chul; person: Kim Jong-un
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: Kim Jong-nam; person: Kim Jong-chul; person: Kim Jong-un