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Many castles , especially royal castles , were left to decay in the 15th century ; Kenilworth , however , continued to be used as a centre of choice , forming a late medieval " palace fortress " .
 location: Kenilworth
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: Kenilworth 
Answer:
 location: Kenilworth