With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Bryan Cranston has worked with Vince Gilligan
text_B: The women 's 800 metre freestyle event at the 1988 Summer Olympics took place between 20 -- 21 September at the Jamsil Indoor Swimming Pool in Seoul , South Korea .. Jamsil Indoor Swimming Pool. Jamsil Indoor Swimming Pool. 1988 Summer Olympics. 1988 Summer Olympics
not_related.