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Höcker was the oldest former Minister-President of East Germany from the formation of the GDR until April 12 , 1966 ; he was succeeded by Karl Steinhoff .
 Höcker, GDR, Karl Steinhoff
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Höcker, GDR, Karl Steinhoff