With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Nick Nolte was a cast member in A Walk in the Woods.
text_B: The Black Sea undersea river is a current of particularly saline water flowing through the Bosphorus Strait and along the seabed of the Black Sea .. saline. Salinity. Bosphorus Strait. Bosphorus. seabed. seabed. Black Sea. Black Sea. The discovery of the river , announced on 1 August 2010 , was made by scientists at the University of Leeds , and is the first of its kind in the world .. University of Leeds. University of Leeds. Scientists have previously discovered channels running along ocean floors , based on sonar scanning .. sonar. sonar. One of the largest of these runs from the mouth of the Amazon River into the Atlantic Ocean .. Amazon River. Amazon River. Atlantic Ocean. Atlantic Ocean. Though it was suspected that these channels might function as rivers , it was only with the discovery of the Black Sea river that this suspicion was confirmed .. Black Sea. Black Sea. Because of the power and unpredictability of these streams , they have been difficult to explore directly .. A team of scientists headed by Jeff Peakall and Daniel Parsons of the University of Leeds collaborated with scientists from the University of Southampton , Memorial University of Newfoundland , and the Turkish Institute of Marine Sciences .. University of Leeds. University of Leeds. University of Southampton. University of Southampton. Memorial University of Newfoundland. Memorial University of Newfoundland. Turkish. Turkey. Institute of Marine Sciences. Institute of Marine Sciences. The team used the Natural Environment Research Council 's Autosub3 -- a 7-metre torpedo-shaped autonomous underwater vehicle -- to get as close to the current as possible .. Natural Environment Research Council. Natural Environment Research Council. autonomous underwater vehicle. autonomous underwater vehicle. The river was found to be 37 mi long , up to 115 ft deep and 0.6 mi wide .. Though smaller than the Amazon channel , the undersea river still carried ten times more water than the Rhine .. Rhine. Rhine. It flows at a speed of four miles per hour , with 22000 m3 passing through per second .. Had it been a surface river it would have ranked as the sixth largest river in the world .. The river was found to contain features typical of surface rivers , such as river banks , floodplains , waterfalls and rapids .. One major difference was that the underwater river , when rounding a bend , moved in currents spinning in the opposite direction from those on land .. The river works as a density current , because it carries sediments along the sea floor and has a higher salinity than the surrounding water .. density current. Gravity current. salinity. salinity. The discovery was expected to have great implication for the study of marine biology , climate change , and geological formation .. marine biology. marine biology. climate change. climate change. geological formation. Formation ( stratigraphy ). In addition to this , the information obtained could be useful for oil companies interested in exploiting underwater resources of oil and natural gas .. oil companies. Petroleum industry
not_related.