With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: A Song of Ice and Fire is by an Armenian.
text_B: Holanthias is a genus of colourful fishes in the subfamily Anthiadinae .. Anthiadinae. Anthiadinae. The two species are restricted to fairly deep reefs in the Southeast Atlantic .. Both reach a length of about 22 cm .
not_related.