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Withering away of the state is a concept of Marxism , coined by Friedrich Engels , and referring to the idea that the social institution of a state will eventually become obsolete and disappear , as the society will be able to govern itself without the state and its coercive enforcement of the law .
 person: Friedrich Engels
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: Friedrich Engels 
Answer:
 person: Friedrich Engels