104432
However , existing children 's railways continued to be used , and new tracks and locomotives were built even after the break-down of the Soviet Union .
 location: Soviet Union
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Soviet Union 
Answer:
 location: Soviet Union