With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Billy Bob Thornton appeared in a film based on a novel.
text_B: Berliner AK 07 is a German football club based in Berlin .. German football club. Football in Germany. Berlin. Berlin. The club was founded in 1907 and has since evolved into a multi-cultural German-Turkish association with temporary ties to professional football in Turkey .. Turkey. Turkey
not_related.