With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Indonesia is part of a continent that is part of Eurasia.
text_B: Ovaticeras is an extinct genus of cephalopod belonging to the family Hildoceratidae .. Hildoceratidae. Hildoceratidae. cephalopod. cephalopod. These cephalopods existed in the Jurassic period , during upper Pliensbachian and lower Toarcian .. Pliensbachian. Pliensbachian. Toarcian. Toarcian. Jurassic. Jurassic. Its fossils were found in Europe , North Africa and possibly also in Canada and Vietnam .. It might have evolved from Harpoceras falciferum -LRB- in the case of species O. ovatum , as O. paltoides lived before Harpoceras falciferum -RRB- and died out without leaving any descendants .. Harpoceras. Harpoceras
not_related.