25897
This principle formed the basic definition of socialism by its pre-Marxist proponents , most notably Ricardian socialists , social anarchists and democratic socialist s. Definition and purpose To each according to his contribution was a concept espoused by many members of the labor movement .
 None
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:  
Answer:
 None