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The first summit was held in December 1953 , at the insistence of Prime Minister Winston Churchill , to discuss relations with the Soviet Union during the Cold War .
 person: Winston Churchill; location: Soviet Union
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: Winston Churchill, Soviet Union 
Answer:
 person: Winston Churchill; location: Soviet Union