With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Mango is a fruit grown on a tree found in central Asia.
text_B: The 2017 World Sprint Speed Skating Championships were held at the Olympic Oval in Calgary , Canada , from 25 to 26 February 2017 .. Calgary. Calgary. Canada. Canada. Olympic Oval. Olympic Oval. World Sprint Speed Skating Championships. World Sprint Speed Skating Championships
not_related.