With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: South Park is only a written media.
text_B: Duncans Mills -LRB- or Duncan 's Mills -RRB- is an unincorporated community located in Sonoma County , California .. unincorporated community. Unincorporated area. California. California. County. List of counties in California. Sonoma. Sonoma County, California
not_related.