With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Marble Hill is a neighborhood outside of the New York City.
text_B: The Black Kei River , -LRB- Swart-Keirivier -RRB- , originates southwest of Queenstown , and eventually joins the White Kei River , to become the Great Kei River .. White Kei River. White Kei River. Queenstown. Queenstown, Eastern Cape. Great Kei River. Great Kei River. Several villages are situated on its banks , including McBride Village , Qabi , Ntabelanga , Thornhill , Loudon , Mitford , Basoto , Baccle 's Farm and Tentergate .. McBride Village. McBride Village. Qabi. Qabi. Ntabelanga. Ntabelanga. Thornhill. Thornhill, Tsolwana. Loudon. Loudon, Tsolwana. Mitford. Mitford, Eastern Cape. Basoto. Basoto, Tsolwana. Tentergate. Tentergate. The Thrift Dam is its only significant reservoir .. Thrift Dam. Thrift Dam. Presently this river is part of the Mzimvubu to Keiskama Water Management Area .. Mzimvubu to Keiskama Water Management Area. Mzimvubu to Keiskama Water Management Area. Its upper reaches form the western boundary of the Tsolwana Nature Reserve , and during the mid-1800s , the Black Kei and its Klipplaat tributary formed the northern boundary of British Kaffraria .. Tsolwana Nature Reserve. Tsolwana Nature Reserve. British Kaffraria. British Kaffraria. Klipplaat. Klipplaat River. The Klaas Smits and Klipplaat rivers are its main tributaries .. Klaas Smits. Klaas Smits River. Klipplaat. Klipplaat River
not_related.