With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Vladimir Putin was a KGB Foreign Intelligence Officer.
text_B: Jagdgeschwader 142 Horst Wessel was a fighter wing of Nazi Germany 's Luftwaffe in World War II .. Nazi Germany. Nazi Germany. Luftwaffe. Luftwaffe. World War II. World War II. Category  : Luftwaffe Wings. Luftwaffe. Luftwaffe. Category  : Military units and formations established in 1938
not_related.