10523
Largely complete by 1230 , the castle was of typical Norman courtyard design , with a central square without a keep , bounded on all sides by tall defensive walls and protected at each corner by a circular tower .
 None
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:  
Answer:
 None