Question: Am Spiegelgrund was the name of a children's clinic in Vienna where 789 children were killed under the Aktion T4, was a postwar name for mass murder through involuntary euthanasia in which Nazi controlled country?
Sentence (from "Aktion T4"): In October 1939 Adolf Hitler signed a "euthanasia decree" backdated to 1 September 1939 that authorized his personal physician Karl Brandt and "Reichsleiter" Philipp Bouhler to implement the programme.
Relevant evidence: No