With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Kiefer Sutherland is a film actor.
text_B: 2008 OG 19 is a trans-Neptunian object and a possible dwarf planet located in the scattered disc .. scattered disc. scattered disc. trans-Neptunian object. trans-Neptunian object. possible dwarf planet. possible dwarf planet. It was discovered on July 30 , 2008 through the Palomar Observatory .. Palomar Observatory. Palomar Observatory
not_related.