With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Amerigo Vespucci was a horse.
text_B: Mike McMahon -LRB- 19 January 1902 -- 23 December 1962 -RRB- was an Australian rules footballer who played with Fitzroy in the Victorian Football League -LRB- VFL -RRB- .. Fitzroy. Fitzroy Football Club. Victorian Football League. Australian Football League
not_related.