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In 1946 , he became a member of the Socialist Unity Party of Germany ( SED ) .
 organization: the Socialist Unity Party of Germany ( SED )
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: the Socialist Unity Party of Germany ( SED ) 
Answer:
 organization: the Socialist Unity Party of Germany ( SED )