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Dustin Hersee ( born August 14 , 1975 in Vancouver , British Columbia ) is a retired male backstroke swimmer from Canada , who competed for his native country at the 2000 Summer Olympics in Sydney , Australia .
 Dustin Hersee, Vancouver, British Columbia, Canada, Sydney , Australia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Dustin Hersee, Vancouver, British Columbia, Canada, Sydney , Australia