With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Beyoncé Knowles is the highest-paid black princess in history as of 2014.
text_B: The Holdridge life zones system is a global bioclimatic scheme for the classification of land areas .. It was first published by Leslie Holdridge in 1947 , and updated in 1967 .. Leslie Holdridge. Leslie Holdridge. It is a relatively simple system based on few empirical data , giving objective mapping criteria .. A basic assumption of the system is that both soil and climax vegetation can be mapped once climate is known .. soil. soil type. climax vegetation. climax vegetation
not_related.