With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Solange Knowles is a vocalist.
text_B: The zebra mbuna -LRB- Maylandia zebra -RRB- is a species of cichlid endemic to Lake Malawi in Africa .. Maylandia. Maylandia. cichlid. cichlid. endemic. Endemism. Lake Malawi. Lake Malawi. This species can reach a length of 11.3 cm .. It feeds on aufwuchs , a surface layer of mostly algal material that grows on rocks .. aufwuchs. aufwuchs. This cichlid is a mouthbrooder and the female broods the eggs in her mouth for about three weeks .. cichlid. cichlid. This fish can sometimes be found in the aquarium trade .. aquarium. aquarium
not_related.