With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: A block is also called a "swat."
text_B: The Wars of Light and Shadow is a series of fantasy books by Janny Wurts .. Janny Wurts. Janny Wurts. When completed it will consist of five story arcs , with the first three arcs complete .
not_related.