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The Soviet Union and Mauritania established diplomatic relations on 12 July 1964 .
 location: Soviet Union; location: Mauritania
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 Union, Mauritania 
Answer:
 location: Soviet Union; location: Mauritania