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Descartes proposed that consciousness resides within an immaterial domain he called res cogitans ( the realm of thought ) , in contrast to the domain of material things , which he called res extensa ( the realm of extension ) .
 person: Descartes
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Descartes 
Answer:
 person: Descartes