With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: History of art includes Dance.
text_B: Ayul Kaithi is a 1991 Tamil drama film , directed by K. Subhash , starring Prabhu and Revathi in lead roles .. K. Subhash. K. Subash. Prabhu. Prabhu ( actor ). Revathi. Revathi. Tamil films of 1991. Tamil. Tamil language. drama film. drama film. The film , produced by A. N. Ramasamy , had musical score by Sankar Ganesh , and was released on 29 June 1991 .. Sankar Ganesh. Sankar Ganesh. Tamil films of 1991
not_related.