8840
In doubles , she teamed with her sister Serena to successfully defend their title , defeating the top-ranked team of Cara Black and Liezel Huber in the final .
 person: Serena; person: Cara Black; person: Liezel Huber
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: Serena; person: Cara Black; person: Liezel Huber