132555
Former champion of Russia saw her comeback attempt come to an early end , as Argentina 's beat her , 6 - 2 , 3 - 6 , 6 - 4 .
 Russia, Argentina
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Russia, Argentina