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He was ten years old when Japanese forces attacked Guam on December 8 , 1941 , leading to the occupation of the island during World War II .
 location: Japanese; organization: Guam
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: Japanese, Guam 
Answer:
 location: Japanese; organization: Guam