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In the middle Byzantine period ( 9th – 12th centiuries ) , the term stratopedon came to signify more the army on campaign , rather than the camp itself ; hence the term stratopedarchēs was used more in the sense of " commander-in-chief " .
 Byzantine
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Byzantine