Detailed Instructions: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Problem:An elderly German man recently indicted on mass murder charges for his time spent at Auschwitz in WW2 was on duty when Jewish diarist Anne Frank arrived. Hubert Zafke, now 94, was present when Anne came in on a train carrying 498 men, 442 women and 79 children from Holland's Westerbork concentration camp on September 5, 1944, prosecution documents released at the weekend show. Anne, whose memoir of a life in hiding from the Nazis became the single most poignant piece of Holocaust literature, was later transferred to the Belsen concentration camp in Germany where she died early in 1945. Only her father would survive the war.Hubert Zafke was on duty when the train arrived on September 5, 1944Joined the Hitler Youth as a teenager before becoming junior squad leaderFather-of-four accused of helping to gas or shoot victims while on dutyAnne was later transferred to Belsen concentration camp and died in 1945 
 Question:More than 1.1 million people, mostly _, were liquidated at Auschwitz.
Solution:
Jewish