With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: NBC premiered the show Little Big Shots.
text_B: The women 's 1000 metres race of the 2014 -- 15 ISU Speed Skating World Cup 4 , arranged in the Thialf arena in Heerenveen , Netherlands , was held on 13 December 2014 .. Thialf. Thialf. Heerenveen. Heerenveen. Heather Richardson of the United States won , followed by Brittany Bowe of the United States in second place , and Li Qishi of China in third place .. Heather Richardson. Heather Richardson. Brittany Bowe. Brittany Bowe. Li Qishi. Li Qishi. Ayaka Kikuchi of Japan won Division B.. Ayaka Kikuchi. Ayaka Kikuchi
not_related.