129768
In 1944 , the ship was in the Baltic , being used as a refugee evacuation ship rescuing Germans trapped in Latvia , East Prussia and Danzig by the advance of the Red Army .
 Latvia, Danzig, Red Army
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Latvia, Danzig, Red Army