Question: Hanns Alexander, was a German Jewish refugee who tracked down and arrested the Kommandant of Auschwitz Rudolf Höss, was a Nazi German "SS"-"Obersturmbannführer" (lieutenant colonel) and the longest-serving commandant of Auschwitz concentration and extermination camp, in which event?
{'answer': 'World War II', 'supporting_facts': [['Hanns Alexander', 0], ['Rudolf Höss', 0]]}