With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Chronicles of Narnia is a series from Walt Disney Co.
text_B: Mecyclothorax obscurus is a species of ground beetle in the subfamily Psydrinae .. ground beetle. ground beetle. Psydrinae. Psydrinae. It was described by Liebherr in 2006 .
not_related.