29823
It spends a fair amount of time analyzing the situation in the remaining socialist states , trying to reach conclusions as to why these states survived when so many did not , following the collapse of the Eastern European socialist states in 1989 and the dissolution of the Soviet Union in 1991 .
 organization: Eastern European; 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: Eastern European, Soviet Union 
Answer:
 organization: Eastern European; location: Soviet Union