With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Coronary artery disease can be prevented by sleeping.
text_B: Heidenheim an der Brenz -LRB- short  : Heidenheim ; Swabian  : Hoidna -RRB- is a town in Baden-Wurttemberg in southern Germany .. Swabian. Swabian German. Baden-Wurttemberg. Baden-Wurttemberg. Germany. Germany. It is located near the border with Bavaria , approximately 17 km south of Aalen and 33 km north of Ulm .. Bavaria. Bavaria. Aalen. Aalen. Ulm. Ulm. Heidenheim is the largest town and the seat of the district of Heidenheim , and ranks third behind Aalen and Schwabisch Gmund in size among the towns in the region of East Wurttemberg .. Aalen. Aalen. district of Heidenheim. Heidenheim ( district ). Schwabisch Gmund. Schwabisch Gmund. Heidenheim is the economic center for all the communities in Heidenheim district and is the headquarters of the Voith industrial company .. Voith. Voith. The town 's population passed the 20,000 mark in 1925 .. Heidenheim collaborates with the town of Nattheim in administrative matters .. The residents of Heidenheim and its surrounding area speak the distinct German dialect of Swabian .. Swabian. Swabian German
not_related.