With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Sherlock (TV series) was released on Blu-ray.
text_B: The TM-46 mine is a large , circular , metal-cased Soviet anti-tank mine .. Soviet. Soviet Union. anti-tank mine. anti-tank mine. It utilises either a pressure fuze or tilt-rod , which is screwed into the top .. fuze. fuze. Anti-tank mines with this type of fuze were capable of inflicting much more damage to armored vehicles .. fuze. fuze. The TMN-46 is a variant of the mine fitted with a secondary fuze well on the bottom -LRB- where it can not be seen -RRB- which is slightly off-set from the centre of the mine .. fuze. fuze. This secondary fuze well can be fitted with a pull-fuze which functions as an anti-handling device .. fuze. fuze. anti-handling device. anti-handling device. The mine was used by the North Vietnamese forces during the Vietnam War , and is found in many countries in Africa , the Middle East and South East Asia .. Vietnam War. Vietnam War. Because the TM-46 has a metal casing , it is very easy to detect with a mine-detector .. However , mine-fields containing TM-46s may have also been sown with minimum metal mines , e.g. the PMA-2 .. PMA-2. PMA-2 mine
not_related.