Question: Do both directors of films Beneath the Valley of the Ultra-Vixens and The Marriage of Luise Rohrbach share the same nationality?
Sentence (from "The Marriage of Luise Rohrbach"): The Marriage of Luise Rohrbach( German: Die Ehe der Luise Rohrbach) is a 1917 German silent drama film directed by Rudolf Biebrach and starring Henny Porten, Emil Jannings and Ludwig Trautmann.
Relevant evidence: Yes