With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Thor: The Dark World is a Marvel superhero movie.
text_B: Bacchisa cavernifera is a species of beetle in the family Cerambycidae .. Cerambycidae. Cerambycidae. Bacchisa. Bacchisa. beetle. beetle. It was described by Aurivillius in 1922 .. It is known from Java , Sumatra , and the Philippines .. Java. Java. Sumatra. Sumatra. Philippines. Philippines
not_related.