Question: What country of origin does Operation Spark and Henning von Tresckow have in common?
Sentence (from "Operation Spark (1940)"): Operation Spark (sometimes translated as "Operation Flash") was the code name for the planned assassination of Nazi dictator Adolf Hitler by the anti-Nazi conspiracy of German army officers and political conservatives, known as the "Schwarze Kapelle" ("black band") during World War II.
Relevant evidence: No