With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Warren Buffett has pledged to give away zero percent of his fortune.
text_B: Jonathan Spilsbury -LRB- 1737 ?. -- 1812 -RRB- was an English engraver , the brother of John Spilsbury , with whom he has sometimes been confused , and father of Maria Spilsbury .. John Spilsbury. John Spilsbury ( cartographer ). Maria Spilsbury. Maria Spilsbury
not_related.