Question: Are Leonard Stogel and Eva Rösken of the same nationality?
Sentence (from "Leonard Stogel"): Coincidentally, Stogel's parents, Julius and Doris (Eisenberg) Stogel, had earlier perished on American Airlines Flight 1 on March 1, 1962 (a crash which also claimed the life of Linda McCartney's mother).
Relevant evidence: No