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Marek Jan Siemek ( November 27 , 1942 – May 30 , 2011 ) was a Polish philosopher and historian of German transcendental philosophy ( German idealism ) .
 Marek, Siemek
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Marek, Siemek