With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Alpha Centauri is a constellation.
text_B: Osthouse is a commune in the Bas-Rhin department in Alsace in north-eastern France .. commune. Communes of France. Bas-Rhin. Bas-Rhin. department. Departments of France. Alsace. Alsace. France. France. The sole remaining wall of the 1865 synagogue , destroyed by the Nazis , makes a dramatic standing ruin .
not_related.