With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Kris Jenner has at least five children.
text_B: Arriscope may refer to  :. Arriscope -LRB- lens -RRB- , a line of anamorphic lenses for Arriflex. Arriscope -LRB- Surgical Microscope -RRB- , a fully digital surgical microscope developed by Arri
not_related.