22054
Convictions Obtained Operation Last Chance assisted in the prosecution and conviction of John Demjanjuk for his role in the torture and murder of Jews in various concentration camps , among other atrocities .
 John Demjanjuk
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 John Demjanjuk