With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Pluto is primarily made of ice.
text_B: Gnomidolon pilosum is a species of beetle in the family Cerambycidae .. Cerambycidae. Cerambycidae. Gnomidolon. Gnomidolon. beetle. beetle. It was described by Martins in 1962 .
not_related.