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In English , since around 1600 , the word " palladium " has been used figuratively to mean anything believed to provide protection or safety , and in particular in Christian contexts a sacred relic or icon believed to have a protective role in military contexts for a whole city , people or nation .
 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