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Christy was the winner of the Belgian national final for the contest , held on 1 March ; she had previously taken part in the Belgian preselections of 1970 , 1971 and 1973 .
 Christy
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Christy