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He entered the Bundestag on 7th June 1972 , when he succeeded Karl Theodor Freiherr von und zu Guttenberg , remaining only until the end of the 1972 parliamentary term .
 Karl Theodor Freiherr von und zu Guttenberg
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Karl Theodor Freiherr von und zu Guttenberg