Question: During what war did Herbert Melhorn serve as director of Stiftung Nordhav, an organization formed by Reinhard Heydrich, who was also a main architect of the Holocaust?
Sentence (from "Herbert Mehlhorn"): Mehlhorn was involved in the camouflage of the mass graves of the Jewish victims in the forest of the Chełmno extermination camp.
Relevant evidence: No