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Proposed solutions can be divided broadly into two categories : dualist solutions that maintain Descartes ' rigid distinction between the realm of consciousness and the realm of matter but give different answers for how the two realms relate to each other ; and monist solutions that maintain that there is really only one realm of being , of which consciousness and matter are both aspects .
 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