With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Malcolm Young is the founder of AC/DC.
text_B: A brilliant is a diamond or other gemstone cut in a particular form with numerous facets so as to have exceptional brilliance .. diamond. Diamond ( gemstone ). gemstone. gemstone. cut. diamond cut. The shape resembles that of a cone and provides maximized light return through the top of the diamond .. diamond. Diamond ( gemstone ). cone. Cone ( geometry ). Even with modern techniques , the cutting and polishing of a diamond crystal always result in a dramatic loss of weight ; rarely is it less than 50 % .. diamond. Diamond ( gemstone ). crystal. crystal. The round brilliant cut is preferred when the crystal is an octahedron , as often two stones may be cut from one such crystal .. cut. diamond cut. crystal. crystal. octahedron. octahedron. Oddly shaped crystals such as macles are more likely to be cut in a fancy cut -- that is , a cut other than the round brilliant -- which the particular crystal shape lends itself to .. cut. diamond cut. crystal. crystal. fancy cut. diamond cut#Fancy cuts
not_related.