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The party had been formed on 21 April 1946 by the merger of the SPD in the Soviet occupation zone with the Communist Party of Germany ( KPD ) , strongly backed by the Soviet authorities .
 location: Soviet occupation zone; organization: Communist Party of Germany
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: Soviet occupation zone, Communist Party of Germany 
Answer:
 location: Soviet occupation zone; organization: Communist Party of Germany