With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ronda Rousey refused to be in any film directed by James Wan.
text_B: Polyscias gymnocarpa , commonly known as the Koolau Range ` ohe or Koolau tetraplasandra , is a species of flowering plant in the ivy family , Araliaceae , that is endemic to the Hawaiian island of Oahu .. Araliaceae. Araliaceae. Polyscias. Polyscias. flowering plant. flowering plant. ivy. ivy. endemic. Endemism. It is threatened by habitat loss .. habitat loss. habitat loss
not_related.