With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Sue Vertue produced a sitcom that premiered on May 12.
text_B: The sombre catshark , Bythaelurus incanus , is a species of catshark in the Scyliorhinidae family .. Scyliorhinidae. Catshark. Bythaelurus. Bythaelurus. catshark. catshark. It is endemic to Australia .. endemic. Endemism. Australia. Australia. Its natural habitat is the open seas .. habitat. habitat
not_related.