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Arie ( Aad ) Kosto ( born 9 January 1938 , Oegstgeest ) is a former Dutch politician .
 Aad, Kosto, Oegstgeest, Dutch
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Aad, Kosto, Oegstgeest, Dutch