With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ceres is in the Solar System.
text_B: Saint-Tugdual is a commune in the Morbihan department of Brittany in north-western France .. Morbihan. Morbihan. commune. Communes of France. department. Departments of France. Brittany. Brittany ( administrative region ). France. France
not_related.