With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Bernie Sanders used to be chair of the Senate Judiciary Committee.
text_B: Landsdale is a northern suburb of Perth , Western Australia located within the local government area of the City of Wanneroo .. City of Wanneroo. City of Wanneroo. Perth. Perth. Western Australia. Western Australia. It is mixed use , with residential , commercial and light manufacturing areas .
not_related.