With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Led Zeppelin were a musical group.
text_B: George Carmichael -LSB- George de Carmichel -RSB- was a 15th-century bishop-elect of Glasgow .. bishop-elect of Glasgow. Bishop of Glasgow. He was elected to the bishopric in early 1483 soon after the death of his predecessor John Laing .. John Laing. John Laing ( bishop ). He was never consecrated .. The Pope , Pope Sixtus IV , rejected his election because he had previously reserved the see for himself .. Pope Sixtus IV. Pope Sixtus IV. Sixtus provided instead Robert Blackadder to the bishopric .. Robert Blackadder. Robert Blackadder. He may have died in 1484 on the way to the Holy See to appeal the pope 's decision .. Holy See. Holy See
not_related.