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In 1989 the party did get a second seat in Parliament and until his resignment in 2001 he worked together with Eimert van Middelkoop .
 Eimert van Middelkoop
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Eimert van Middelkoop