With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Extracorporeal shockwave therapy (ESWT) is used in urology.
text_B: The Vereinsthaler was the currency of Saxony between 1857 and 1873 .. Vereinsthaler. Vereinsthaler. Saxony. Saxony. It replaced the Thaler at par and was replaced by the Mark at a rate of 1 Vereinsthaler = 3 Mark .. Vereinsthaler. Vereinsthaler. Thaler. Saxon thaler. Mark. German gold mark. The Vereinsthaler was subdivided into 30 Neugroschen , each of 10 Pfennig .. Vereinsthaler. Vereinsthaler. Neugroschen. Neugroschen. Pfennig. Pfennig. Category  : Currencies of Germany. Category  : Kingdom of Saxony. Saxony. Saxony. Category  :1857 establishments in Germany. Category  :1873 disestablishments in Germany. Category  :19 th-century economic history
not_related.