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There was also fear that crossing into China would provoke the Soviet Union into entering the war .
 location: China; 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: China, Soviet Union 
Answer:
 location: China; location: Soviet Union