With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The music industry is what Sade is involved in.
text_B: Dragan Ljubisavljevic -LRB- born on December 22 , 1979 in Kraljevo , Serbia -RRB- is a Serbian footballer -LRB- defender -RRB- playing currently for Mitra Kukar .. Kraljevo. Kraljevo. Serbia. Serbia. Mitra Kukar. Mitra Kukar FC. defender. Defender ( association football )
not_related.