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Furthermore , in Nigeria , though the hundreds of sub-regional polities that exist there are not provided for in the current constitution , they are nevertheless legally recognised aspects of the structure of governance that operates in the nation .
 location: Nigeria
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Nigeria 
Answer:
 location: Nigeria