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In the sub-Roman period a Brythonic kingdom called Dumnonia emerged , covering the entire peninsula , although it is believed by some to have effectively been a collection of sub-kingdoms .
 location: Dumnonia
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Dumnonia