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The Kursk , one of the Russian navy ' s most modern models , sank about 150 km from the Siveromorsk base 69 . 4 degrees north and 37 . 5 degrees south in international waters between Russia and Norway .
 Russian, Russia, Norway, the Russian navy, the Siveromorsk base 69 . 4 degrees north and 37 . 5 degrees south in international waters between Russia and Norway, The Kursk, one of the Russian navy ' s most modern models, the Russian navy ' s most modern models, 69 . 4 degrees north and 37 . 5 degrees south in international waters between Russia and Norway, international waters
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 Russian, Russia, Norway, the Russian navy, the Siveromorsk base 69 . 4 degrees north and 37 . 5 degrees south in international waters between Russia and Norway, The Kursk, one of the Russian navy ' s most modern models, the Russian navy ' s most modern models, 69 . 4 degrees north and 37 . 5 degrees south in international waters between Russia and Norway, international waters