With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Woody Harrelson's breakout role was in 1990.
text_B: Haplochromis serranus is a species of cichlid endemic to Lake Victoria .. cichlid. cichlid. endemic. endemism. Lake Victoria. Lake Victoria. This species reaches a length of 20.5 cm SL .. fish measurement
not_related.