With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Christopher Nolan directed The Dark Knight Trilogy.
text_B: Edmundo Stanfield -LRB- c.1900-1960 -RRB- was an English rugby union footballer , he played for Club Atletico San Isidro and the Argentina national rugby union team .. Argentina. Argentina national rugby union team. English. English people. rugby union. rugby union. Club Atletico San Isidro. Club Atletico San Isidro. Argentina national rugby union team. Argentina national rugby union team
not_related.