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Early on , Krainer became interested in public broadcast programs , which dealt with nutrition issues , particularly “ Hobbythek ” in the German Broadcast Station WDR .
 Krainer, WDR
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Krainer, WDR