With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Miss Selfridge began as a elderly fashion section.
text_B: The United States Border Patrol -LRB- USBP -RRB- is an American federal law enforcement agency .. federal law enforcement agency. federal police. Its mission is to detect and prevent illegal aliens , terrorists and terrorist weapons from entering the United States , and prevent illegal trafficking of people and contraband .. illegal aliens. illegal immigration. It is the mobile , uniformed law enforcement arm of U.S. Customs and Border Protection -LRB- CBP -RRB- , a component of the U.S. Department of Homeland Security -LRB- DHS -RRB- .. Department of Homeland Security. United States Department of Homeland Security. U.S. Customs and Border Protection. U.S. Customs and Border Protection. U.S. Department of Homeland Security. United States Department of Homeland Security. With over 21,000 agents , the U.S. Border Patrol is one of the largest law enforcement agencies in the United States .. The Chief of the U.S. Border Patrol is Ron Vitiello .. Ron Vitiello. Ron Vitiello
not_related.