With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: A lion's taxonomic classification is Panthera leo.
text_B: Afrocyclops pauliani is an extinct species of copepod in the family Cyclopidae .. Cyclopidae. Cyclopidae. Afrocyclops. Afrocyclops. extinct. extinction. species. species. copepod. copepod. A single specimen was discovered in 1951 in a small freshwater pool near Antananarivo , Madagascar , but the species has not been seen in collections since .. species. species. Antananarivo. Antananarivo. Madagascar. Madagascar
not_related.