With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Only a small part of Antarctica is north of the Antarctic Circle.
text_B: Tianning Temple may refer to two temples in China  :. Tianning Temple -LRB- Beijing -RRB- , in Guang ` anmen , Beijing. Tianning Temple -LRB- Changzhou -RRB- , in Changzhou , Jiangsu
not_related.