With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Edgar Allan Poe was an American writer.
text_B: Lisduff is a townland in County Leitrim , Ireland .. townland. townland. County Leitrim. County Leitrim. Ireland. Ireland. Category  : Townlands of County Leitrim. County Leitrim. County Leitrim
not_related.