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H. W. E. ( Harry ) van Bruggen ( Amsterdam , December 6 , 1927 – Amersfoort , February 8 , 2010 ) was a Dutch amateur botanist .
 Harry, van Bruggen, Amsterdam, Amersfoort, 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:
 Harry, van Bruggen, Amsterdam, Amersfoort, Dutch