Question: Do both directors of films Frontier Revenge and Chelsea On The Rocks have the same nationality?
Sentence (from "Belogradchik Rocks"): The Belogradchik Rocks(" Belogradchishki skali") are a group of strangely shaped sandstone and conglomerate rock formations located on the western slopes of the Balkan Mountains(" Stara Planina") near the town of Belogradchik in northwest Bulgaria.
Relevant evidence: No