With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Genghis Khan existed.
text_B: Aberdeen is an unincorporated community in Cass Township , Ohio County , in the U.S. state of Indiana .. Indiana. Indiana. County. List of counties in Indiana. Ohio. Ohio County, Indiana. Township. List of townships in Indiana. Cass. Cass Township, Ohio County, Indiana. unincorporated community. unincorporated community. Cass Township. Cass Township, Ohio County, Indiana. Ohio County. Ohio County, Indiana. U.S. state. U.S. state
not_related.