105737
Through dialectical materialism , the proletariat understands that what the individual bourgeois conceived as " laws " akin to the laws of nature , which may be only manipulated as in René Descartes 's dream , but not changed , is in fact the result of a social and historical process , which can be controlled .
 person: René Descartes
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: René Descartes 
Answer:
 person: René Descartes