7170
' '' Vitalia Diatchenko Olga Savchuk '' ' 7–5 , 6–1
 Vitalia Diatchenko, Olga Savchuk
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Vitalia Diatchenko, Olga Savchuk