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Demetrius Vikelas ( 1894 – 1896 ) Pierre de Coubertin had already attempted to restart the Olympic Games at the congress for the fifth anniversary of the Union des Sociétés Françaises de Sports Athlétiques in 1892 .
 Demetrius Vikelas, Pierre de Coubertin, Olympic
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Demetrius Vikelas, Pierre de Coubertin, Olympic