With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Turkmenistan was contained within IIkhanate.
text_B: Siu Ma Shan is a 424 m high hill on Hong Kong Island , Hong Kong .. Hong Kong Island. Hong Kong Island. Hong Kong. Hong Kong. Wilson Trail Stage 2 passes near the summit of Siu Ma Shan .. Wilson Trail. Wilson Trail
not_related.