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He was born at Elingaard Manor on Onsøy near Fredrikstad , in Østfold County , Norway and died in Kalundborg , Denmark .
 Onsøy, Fredrikstad, Østfold, Denmark
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Onsøy, Fredrikstad, Østfold, Denmark