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Although Tarakan was only a small marshy island off northeastern Borneo in the Netherlands East Indies , the island 's 700 oil wells , oil refinery , and airfield made it a crucial objectives for the Empire of Japan in the Pacific War .
 Tarakan, Netherlands, Empire of Japan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Tarakan, Netherlands, Empire of Japan