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Together with Leon Giesen who is the former bass player of Toontje Lager , Jack Poels has been working on a music project called Holland America Lijn since 2003 .
 Jack Poels
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Jack Poels