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During the Middle Ages , a squire on the night before his knighting ceremony was expected to take a cleansing bath , fast , make confession , and then hold an all-night vigil of prayer in the chapel , preparing himself in this manner for life as a knight .
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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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