With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Isle of Man has always been an independent country.
text_B: The 1987 Copa del Rey was the 51st edition of the Spanish basketball Cup .. Spanish basketball Cup. Copa del Rey de Baloncesto. It was organized by the ACB and its Final Eight was played in Santa Cruz de Tenerife , in the Palacio Municipal de Deportes between 13 and 15 December 1986 .. ACB. Asociacion de Clubs de Baloncesto. Santa Cruz de Tenerife. Santa Cruz de Tenerife. This edition was played by the four first qualified of the 1986 -- 87 ACB first stage , and was the first one played with a Final Eight format .. ACB. Asociacion de Clubs de Baloncesto
not_related.