With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Steve Jobs was a Texan.
text_B: Fantastic Locations  : Fane of the Drow is an adventure module for the 3.5 edition of the Dungeons & Dragons fantasy role-playing game .. adventure module. Adventure ( Dungeons & Dragons ). 3.5 edition. Editions of Dungeons & Dragons#Dungeons & Dragons v3.5. Dungeons & Dragons. Dungeons & Dragons. fantasy. fantasy. role-playing game. role-playing game
not_related.