With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Rihanna is the youngest and quickest solo artist to earn fourteen number-one singles on the Billboard Hot 100.
text_B: The Thomisidae are a family of spiders , including about 175 genera and over 2,100 species .. family. family ( biology ). genera. Genus. The common name crab spider is often applied to species in this family , but is also applied loosely to many other species of spiders .. family. family ( biology ). spider. spider. Among the Thomisidae , `` crab spider '' refers most often to the familiar species of `` flower crab spiders '' , though not all members of the family are limited to ambush hunting in flowers .. family. family ( biology ). spider. spider. ambush hunting. Ambush predator
not_related.