With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Diana Ross received a Presidential Medal of Freedom in 2016.
text_B: Houcun may refer to  :. Houcun , Quzhou County , town in southern Hebei , China. Houcun , Rizhao , town in Lanshan District , Rizhao , Shandong , China
not_related.