Oka River

Target entity: Oka River
Context triple: [Volga River, majorTributary, Oka River]

• A. Shinano River
  The Shinano River is Japan’s longest river, flowing through central Honshu before emptying into the Sea of Japan.
• B. Yodo River
  The Yodo River is a major waterway in Japan’s Kansai region that flows through Kyoto and Osaka, historically serving as an important route for transport, trade, and urban development.
• C. Moika River
  The Moika River is a small, historic waterway in central Saint Petersburg, Russia, lined with notable palaces and landmarks and forming part of the city’s iconic canal network.
• D. Lena River
  The Lena River is one of the longest rivers in the world, flowing through Siberia in northeastern Russia to the Arctic Ocean.
• E. Amur River
  The Amur River is a major waterway in northeastern Asia that forms much of the border between Russia and China and supports rich ecosystems and regional trade.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Oka River
Target entity description: The Oka River is a major river in central Russia that flows through cities like Oryol, Kaluga, and Nizhny Novgorod before joining the Volga.

• A. Shinano River
  The Shinano River is Japan’s longest river, flowing through central Honshu before emptying into the Sea of Japan.
• B. Yodo River
  The Yodo River is a major waterway in Japan’s Kansai region that flows through Kyoto and Osaka, historically serving as an important route for transport, trade, and urban development.
• C. Moika River
  The Moika River is a small, historic waterway in central Saint Petersburg, Russia, lined with notable palaces and landmarks and forming part of the city’s iconic canal network.
• D. Lena River
  The Lena River is one of the longest rivers in the world, flowing through Siberia in northeastern Russia to the Arctic Ocean.
• E. Amur River
  The Amur River is a major waterway in northeastern Asia that forms much of the border between Russia and China and supports rich ecosystems and regional trade.
• F. None of above. chosen