With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Elephants' predators include sharks.
text_B: Brigadier General Alexander Jobson DSO -LRB- 2 April 1875 -- 7 November 1933 -RRB- was an Australian Army Brigadier General in World War I.. Australian Army. Australian Army. Brigadier General. Brigadier General. DSO. Distinguished Service Order
not_related.