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A " Christmas tree " is a decorated tree , usually an evergreen conifer , such as a spruce , pine or fir , or an artificial tree of similar appearance , associated with the celebration of Christmas , originating in Northern Europe .
 location: Northern Europe
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: Northern Europe 
Answer:
 location: Northern Europe