With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ireland has relatively low-lying mountains.
text_B: SkyCity Auckland -LRB- or often just SkyCity -RRB- is a casino and event centre in the Central Business District of Auckland , New Zealand between Victoria and Federal Streets .. Auckland. Auckland. New Zealand. New Zealand. casino. casino. event centre. Convention center. Central Business District. Auckland CBD. Located at the base of the Sky Tower -LRB- Auckland -RRB- , it was the second casino in New Zealand , and still is the only one in Auckland .. Auckland. Auckland. New Zealand. New Zealand. casino. casino
not_related.