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Hurte Sierd Zylstra and his wife , Jetsi Hendrika Coers , both 50 , were abducted from the teak plantation they managed late Saturday or early Sunday by at least two men demanding $ 1.5 million ransom , authorities said .
 Jetsi Hendrika Coers, Hurte Sierd Zylstra
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 Jetsi Hendrika Coers, Hurte Sierd Zylstra