6706
History On 27 April 1955 , East Germany and the Soviet Union signed an agreement by which Berlin Schönefeld Airport was transferred to civilian use ( since 1945 , it had been operated by the Soviet Army , with scheduled passenger flights having been operated by Aeroflot ) .
 location: Soviet Union; organization: Aeroflot
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Soviet Union; organization: Aeroflot