Question: What plot did Kurt Freiherr von Plettenberg and Claus von Stauffenberg work together on?
Sentence (from "20 July plot"): On 20 July 1944, Claus von Stauffenberg and other conspirators attempted to assassinate Adolf Hitler, Führer of Nazi Germany, inside his Wolf's Lair field headquarters near Rastenburg, East Prussia.
Relevant evidence: Yes