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Jürgen Kretschmer ( born December 4 , 1947 ) is an East German slalom canoer who competed in the early to mid-1970s .
 person: Jürgen Kretschmer; location: East German
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Jürgen Kretschmer, East German 
Answer:
 person: Jürgen Kretschmer; location: East German