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Antisemitism was commonly used as an instrument for settling personal conflicts in the Soviet Union , starting with the conflict between Joseph Stalin and Leon Trotsky and continuing through numerous conspiracy-theories spread by official propaganda .
 location: Soviet Union; person: Joseph Stalin; person: Leon Trotsky
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Soviet Union, Joseph Stalin, Leon Trotsky 
Answer:
 location: Soviet Union; person: Joseph Stalin; person: Leon Trotsky