With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: U2 did not have a reputation as a politically and socially conscious group.
text_B: The Windsor knot , also referred to as a Full Windsor or as a Double Windsor to distinguish it from the half-Windsor , is a method of tying a necktie .. half-Windsor. half-Windsor knot. necktie. necktie. The Windsor knot , compared to other methods , produces a wide symmetrical triangular knot .. symmetrical. Symmetry. The knot is often thought to be named after the Duke of Windsor -LRB- King Edward VIII before his abdication -RRB- .. Duke of Windsor. Duke of Windsor. King Edward VIII. Edward VIII of the United Kingdom. abdication. abdication. his abdication. Abdication of Edward VIII. It is likely , however , that it was invented by his father , George V .. George V. George V. The Duke preferred a wide knot and had his ties specially made with thicker cloth in order to produce a wider knot when tied with the conventional four-in-hand knot .. four-in-hand knot. four-in-hand knot. The Windsor knot was invented to emulate the Duke 's wide knot with ties made from normal thickness cloth .. The Windsor knot is especially suited for a spread or cutaway collar that can properly accommodate a larger knot .. collar. collar ( clothing ). For correct wear , the tie used for a Windsor knot should be about 4 cm longer than a conventional tie .. The Windsor knot is the only tie knot that is to be used by all personnel in the Royal Air Force and the Royal Air Force Cadets -LRB- ATC and CCF -LRB- RAF -RRB- -RRB- in the UK when wearing their black tie while in uniform .. Royal Air Force. Royal Air Force. ATC. Air Training Corps. However , the Windsor Knot is often frowned upon in other Armed Services or Regiments of the British Forces through its association with the Duke of Windsor , who became a potential pretender to the throne following his abdication .. Duke of Windsor. Duke of Windsor. abdication. abdication. pretender. pretender. his abdication. Abdication of Edward VIII. The Windsor and four-in-hand knots are authorized for use by all services of the Canadian Forces .
not_related.