With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Richard III was an English citizen.
text_B: Carvel is an ice cream franchise owned by Focus Brands .. Focus Brands. Focus Brands. franchise. Franchising. Carvel is best known for their soft serve ice cream and ice cream cakes , which feature a layer of distinctive ` crunchies ' .. It also sells a variety of novelty ice cream bars and ice cream sandwiches .
not_related.