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Estíbaliz Martínez ( born 9 May 1980 in Vitoria ) is a Spanish rhythmic gymnast and Olympic Champion .
 Estíbaliz Martínez, Vitoria
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Estíbaliz Martínez, Vitoria