74423
In the Soviet Union the GOST 28147 - 89 algorithm was introduced , with a 64-bit block size and a 256-bit key , which was also used in Russia later .
 Soviet Union, Russia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Soviet Union, Russia