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The curriculum is divided into two educational periods : At Ars Ensis , after discussing the matter with AE 's heraldry specialist , members are provided with the possibility to design and vindicate their own knightly coat of arms , which later - after a successful vindication process - can be displayed at prize playing and other events .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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