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In Scandinavia , rice pudding has long been a part of Christmas tradition , in some countries referred to as " julegröt / julegrøt / julegrød / joulupuuro " ( Yule porridge ) or " tomtegröt / nissegrød " .
 Scandinavia, Christmas
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
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Answer:
 Scandinavia, Christmas