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For example , Xiong-nu mounted bowmen made them more than a match for the Han military , and their threat was at least partially responsible for Chinese expansion into the Ordos region , to create a stronger , more powerful buffer zone against them .
 person: Xiong-nu; location: Ordos
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Xiong-nu; location: Ordos