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Whilst the former Yugoslavia n states still use it , the Eastern Bloc successor states of Austria-Hungary like Hungary and Czechoslovakia after World War II switched to the Kronstadt Gauge of the Baltic Sea , which is higher .
 location: Yugoslavia; location: Hungary; location: Czechoslovakia; location: Kronstadt
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: Yugoslavia, Hungary, Czechoslovakia, Kronstadt 
Answer:
 location: Yugoslavia; location: Hungary; location: Czechoslovakia; location: Kronstadt