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In her second round-robin match she defeated wildcard Zheng Saisai 4 – 6 , 6 – 1 , 6 – 1 to advance to the semifinals , where she defeated Roberta Vinci for a fifth consecutive time .
 person: Zheng Saisai; person: Roberta Vinci
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: Zheng Saisai; person: Roberta Vinci