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He served five years on the editorial board for Kierkegaard Monographs and for the International Kierkegaard Commentary Series .
 Kierkegaard, Kierkegaard
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Kierkegaard, Kierkegaard