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According to some philosophers and sociologists , e.g. Karl Marx and marxist ethics , it is the different life experience of people and the different exposure of them and their families in these roles ( the rich constantly robbing the poor , the poor in a position of constant begging and subordination ) that creates social class differences .
 person: Karl Marx
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: Karl Marx 
Answer:
 person: Karl Marx