With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Tesla, Inc. has a subsidiary that's headquartered in California.
text_B: Fort Concho is a National Historic Landmark owned and operated since 1935 by the city of San Angelo , the seat of Tom Green County in West Texas .. National Historic Landmark. National Historic Landmark. San Angelo. San Angelo, Texas. Tom Green County. Tom Green County, Texas. West Texas. West Texas. Situated on the North Concho River , near its confluence with the South and Middle Concho Rivers , the site selected for Fort Concho was strategic to the stabilization of the region , because of the location of no fewer than five major trails in the vicinity .. Concho River. Concho River. Though the fort was surrounded by miles of flat , treeless prairie , it was considered to be `` one of the most beautiful and best ordered posts in Texas . ''. prairie. prairie. Other forts in the frontier fort system were Forts Griffin , Richardson , Belknap , Chadbourne , Stockton , Davis , Bliss , McKavett , Clark , McIntosh , Inge , and Phantom Hill in Texas , and Fort Sill in Oklahoma .. Griffin. Fort Griffin. Richardson. Fort Richardson, Texas. Belknap. Fort Belknap ( Newcastle, Texas ). Chadbourne. Fort Chadbourne. Stockton. Fort Stockton, Texas. Davis. Fort Davis National Historic Site. Bliss. Fort Bliss. McKavett. Fort McKavett State Historic Site. Clark. Fort Clark, Texas. McIntosh. Fort McIntosh, Texas. Inge. Fort Inge. Phantom Hill. Fort Phantom Hill. Fort Sill. Fort Sill. Oklahoma. Oklahoma. `` Sub posts or intermediate stations '' were also used , including Bothwick 's Station on Salt Creek between Fort Richardson and Fort Belknap , Camp Wichita near Buffalo Springs between Fort Richardson and Red River Station , and Mountain Pass between Fort Concho and Fort Griffin .. Griffin. Fort Griffin. Richardson. Fort Richardson, Texas. Belknap. Fort Belknap ( Newcastle, Texas ). Red River Station. Red River Station, Texas
not_related.