4111
' '' Kimiko Date '' ' / ' '' Ai Sugiyama '' ' defeated Amy Frazier / Kimberly Po 7–6 , 6–7 , 6–3
 Kimiko Date, Ai Sugiyama, Amy Frazier, Kimberly Po
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Kimiko Date, Ai Sugiyama, Amy Frazier, Kimberly Po