With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: FX aired It's Always Sunny in Philadelphia for the first time.
text_B: Dispersal may refer to  :. Biological dispersal , the movement of organisms from their birth site to their breeding site , or from one breeding site to another. Biological dispersal. Biological dispersal. Dispersal vector , forces that carry seeds for plants. Dispersal vector. Dispersal vector. Oceanic dispersal , the movement of terrestrial organisms from one land mass to another by sea-crossing. Oceanic dispersal. Oceanic dispersal. Seed dispersal , the movement or transport of seeds away from the parent plant. Seed dispersal. Seed dispersal. Dispersal draft , a system in professional sports for reassigning players whose former team is defunct. Dispersal draft. Dispersal draft. Dispersal of ownership , breaking up large media companies and media conglomerates to diversify ownership of property rights. Dispersal of ownership. Dispersal of ownership. Force dispersal , strategic spreading-out of military personnel and vehicles to reduce collateral damage. Force dispersal. Force dispersal
not_related.