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Being based on ethnicity and language , rather than physical geography or history , the regions vary enormously in area and population , the most notable example being the Harari Region , which has a smaller area and population than either of the chartered cities .
 Harari Region
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Harari Region