38089
The executioners did not expect the prisoners to survive more than a few hours beyond arrival at Belzec , Sobibór , and Treblinka .
 Belzec, Sobibór, Treblinka
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Belzec, Sobibór, Treblinka