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Unlike his contemporaries Ferdinand Tönnies and Max Weber , he did not focus on what motivates the actions of individuals ( an approach associated with methodological individualism ) , but rather on the study of " social facts " .
 Ferdinand Tönnies, Max Weber
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ferdinand Tönnies, Max Weber