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From September 24 , 1993 through October 7 , 2004 , Norodom Sihanouk reigned as King , after having previously served in a number of offices ( including King ) since 1941 .
 Norodom Sihanouk
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Norodom Sihanouk