With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Comeback premiered on HBO.
text_B: Vulcano is an extreme metal band from Santos , Sao Paulo , Brazil .. Brazil. Brazil. extreme metal. extreme metal. Founded in 1981 , it is one of the first Brazilian heavy metal bands of note ; with reference to their influence on the South American black metal scene , Terrorizer reported that `` many believe that Vulcano not only kick-started musical blasphemy in Brazil , but throughout the whole of Latin America '' .. Brazil. Brazil. heavy metal. heavy metal music. Terrorizer. Terrorizer ( magazine ). Vulcano is noted as an influence on Sepultura .. Sepultura. Sepultura
not_related.