With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: North Korea is bordered by a nation with a population of 1.381 billion.
text_B: Joanneumite is the first recognized isocyanurate mineral , with the formula Cu -LRB- C3N3O3H2 -RRB- 2 -LRB- NH3 -RRB- 2 .. isocyanurate. isocyanurate. It is also ammine-containing mineral , a feature shared with ammineite , chanabayaite and shilovite .. ammineite. ammineite. chanabayaite. chanabayaite. All the minerals are very rare and were found in a guano deposit in Pabellon de Pica , Chile .
not_related.