With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Polar regions are a habitat to Tardigrades.
text_B: Revista Chilena de Literatura is an academic journal about literature published by the University of Chile .. University of Chile. University of Chile. literature. literature. The journal appeared first in 1970 and is currently a biannual journal .. Category  : Chilean literature. literature. literature. Category  : Publications established in 1970. Category  : Spanish-language journals. Category  : Open access journals. Category  : Biannual journals. Category  : University of Chile academic journals. University of Chile. University of Chile. Category  : Literary magazines
not_related.