With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ji Chang-wook is a performer.
text_B: Oberea ruficeps is a species of beetle in the family Cerambycidae .. Cerambycidae. Cerambycidae. Oberea. Oberea. beetle. beetle. It was described by Fischer von Waldheim in 1842 .
not_related.