3280
To achieve this astonishing outcome , she had to produce some of her best tennis to conquer defending champion Li Na in the quarterfinal , which she finally won 6 – 7 , 7 – 5 , 7 – 6 , after an intense battle .
 person: Li Na
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Li Na