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Silao Vaisola Sefo ( born 15 January 1979 in Lefaga ) is a Samoa n rugby union prop .
 Silao Vaisola Sefo, Samoa, rugby union
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Silao Vaisola Sefo, Samoa, rugby union