With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Harry Potter and the Deathly Hallows is a book in a series.
text_B: Iridomyrmex cupreus is a species of ant in the genus Iridomyrmex .. Iridomyrmex. Iridomyrmex. ant. ant. Described in 2011 , specimens have only been collected in Lake Eyre in South Australia .. Lake Eyre. Lake Eyre. South Australia. South Australia
not_related.