351054
Tufts believed in a conception of mutual influences which he saw as opposed in both Marxism & idealism .
 person: Tufts
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: Tufts 
Answer:
 person: Tufts