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Urien 's champions are described as the " men of Catraeth " ( line 1 ) , a place often equated with Catterick ( North Yorkshire ) , and the enemy forces as the " men of Britain " ( gwyr Prydein , line 6 ) , who have come in large numbers to attack the land .
 person: Urien
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:
 person: Urien