1847
Barter has always been a feature of the Soviet Union 's foreign trade , but Yeltsin 's decrees liberalising foreign trade in 1991-1992 has given barter a new impetus .
 person: Yeltsin; 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, else, organization, person 
Text: {0} 
 Entities: Yeltsin, Soviet Union 
Answer:
 person: Yeltsin; location: Soviet Union