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One of leading experts on world-system theory , Christopher Chase-Dunn , noted that the circumscription theory is applicable for the global system , since the global system is circumscribed .
 person: Christopher Chase-Dunn
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
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Text: {0} 
Answer:
 person: Christopher Chase-Dunn