37643
While he did not deny that morals change over time , he rejected the classical Marxist doctrine that history defines morality .
 person: Marxist
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: Marxist 
Answer:
 person: Marxist