With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Heartland was a show.
text_B: Colophon cameroni is a species of beetle in family Lucanidae .. Lucanidae. Lucanidae. Colophon. Colophon ( genus ). beetle. beetle. It is endemic to South Africa .. endemic. Endemism. South Africa. South Africa
not_related.