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During this period , his views were strongly influenced by the theory of " Neo-serfdom " developed by Romanian socialist patriarch Constantin Dobrogeanu-Gherea .
 person: Constantin Dobrogeanu-Gherea
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Constantin Dobrogeanu-Gherea