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Rudolf Kortokraks ( born 8 July 1928 ) is a German painter from Ludwigshafen , Rhein .
 Rudolf Kortokraks, Ludwigshafen
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Rudolf Kortokraks, Ludwigshafen