Input (grade 10): Saint-Étienne-du-Grès is a commune in the Bouches-du-Rhône department in the Provence-Alpes-Côte d'Azur region in southern France.
Output (grade 8): It is located in the region Provence-Alpes-Côte d'Azur in the Bouches-du-Rhône department in the south of France.