With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: South America is home to the largest continental mountain range in the world known as the Andes.
text_B: Bruno and Luisa di Marco are fictional characters from the BBC soap opera EastEnders , played respectively by Leon Lissek from 29 January to 17 December 1998 and Stella Tanner from 29 January to 26 November 1998 .. Stella Tanner. Stella Tanner. Leon Lissek. Leon Lissek. BBC. BBC. soap opera. soap opera. EastEnders. EastEnders. They were two of many characters to be axed by the executive producer of EastEnders , Matthew Robinson .. EastEnders. EastEnders. executive producer. executive producer. Matthew Robinson. Matthew Robinson ( producer )
not_related.