43143
History Tens of thousands of workers and hundreds of missile experts and army officers arrived after the Soviet government decided to establish a secret military base in the Kazakh Steppe .
 location: Soviet
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 
Answer:
 location: Soviet