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Under Caesar the Romans conquered Celtic Gaul , and from Claudius onward the Roman empire absorbed parts of Britain .
 person: Caesar; location: Celtic Gaul; person: Claudius; location: Roman empire; location: Britain
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: Caesar, Celtic Gaul, Claudius, Roman empire, Britain 
Answer:
 person: Caesar; location: Celtic Gaul; person: Claudius; location: Roman empire; location: Britain