21210
ITF world champions for women differed from the WTA year-end rankings the following years : 1978 ( Martina Navratilova ) , 1994 ( Steffi Graf ) , 2001 ( Lindsay Davenport ) , 2004 ( Lindsay Davenport ) , 2005 ( Lindsay Davenport ) , 2011 ( Caroline Wozniacki ) , 2012 ( Victoria Azarenka ) , 2017 ( Simona Halep ) .
 Martina Navratilova, Steffi Graf, Lindsay Davenport, Lindsay Davenport, Lindsay Davenport, Caroline Wozniacki, Victoria Azarenka, Simona Halep
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Martina Navratilova, Steffi Graf, Lindsay Davenport, Lindsay Davenport, Lindsay Davenport, Caroline Wozniacki, Victoria Azarenka, Simona Halep