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Known as " Canada 's Sweetheart " , she is the only Canadian to have won the Olympic ladies ' singles gold medal , the first North American to have won three major titles in one year and the only Canadian to have won the European Championship ( 1947 – 1948 ) .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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