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In the quarterfinals , she defeated fourth seed and world No. 7 Jelena Janković 3 – 6 , 7 – 6 , 6 – 3 for the tenth time in her career .
 Jelena Janković
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Jelena Janković