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Arona railway station ( ) serves the town and comune of Arona , in the Piedmont region , northwestern Italy .
 location: Arona; location: Arona; location: Piedmont
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: Arona, Arona, Piedmont 
Answer:
 location: Arona; location: Arona; location: Piedmont