With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Chris Evans (actor) directed the movie Before We Go.
text_B: Hemicordulia ogasawarensis is a species of dragonfly in the family Corduliidae .. dragonfly. dragonfly. Corduliidae. Corduliidae. It is endemic to Japan .. endemic. Endemism. Japan. Japan
not_related.