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A controversial independence referendum was held in Catalonia on 1 October 2017 , using a disputed voting process .
 location: Catalonia
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: Catalonia 
Answer:
 location: Catalonia