With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Mammals are within a class.
text_B: Mount Bate is a mountain on Vancouver Island in Strathcona Regional District , British Columbia , Canada , 14 km east of the community of Tahsis and 21 km southwest of Rugged Mountain .. Strathcona Regional District. Strathcona Regional District, British Columbia. British Columbia. British Columbia. Canada. Canada. mountain. mountain. Vancouver Island. Vancouver Island. Tahsis. Tahsis, British Columbia. Rugged Mountain. Rugged Mountain. Mount Bate is thought to have been named by George Henry Richards for Captain William Thornton Bate , RN , a surveyor who was killed in the capture of Canton during the Second Opium War in 1857 .. George Henry Richards. George Henry Richards. William Thornton Bate. William Thornton Bate. Canton. Guangzhou. Second Opium War. Second Opium War. The mountain is at the head of Canton Gorge , another geographical feature named by Richards .. mountain. mountain. Canton. Guangzhou
not_related.