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Ronan Keane ( born 20 July 1932 ) , S.C. , was Chief Justice of Ireland from 2000 to 2004 .
 Ronan Keane
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ronan Keane