With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Jackie Chan is a narcoleptic.
text_B: In the Dungeons & Dragons fantasy role-playing game , most commonly in the Kara-Tur sub-setting of the Forgotten Realms , the kappa is an evil creature based upon the kappa of Japanese mythology .. Dungeons & Dragons. Dungeons & Dragons. fantasy. fantasy. role-playing game. role-playing game. Kara-Tur. Kara-Tur. Forgotten Realms. Forgotten Realms. kappa. Kappa ( folklore ). Japanese mythology. Japanese mythology
not_related.