Mackenzie River delta

Target entity: Mackenzie River delta
Context triple: [Beaufort Sea, borderedBy, Mackenzie River delta]

• A. Mackenzie River
  The Mackenzie River is the longest river system in Canada, flowing through the Northwest Territories to the Arctic Ocean and draining a vast portion of northwestern North America.
• B. Labrador River
  The Labrador River is a major waterway in the Labrador region of eastern Canada, contributing significantly to the area's drainage system and natural landscape.
• C. Yukon–Kuskokwim Delta
  The Yukon–Kuskokwim Delta is a vast, sparsely populated river delta in western Alaska known for its wetlands, rich subsistence lifestyle, and predominantly Central Alaskan Yup’ik communities.
• D. Athabasca River
  The Athabasca River is a major glacier-fed waterway in western Canada that flows through the Rocky Mountains and northern Alberta, playing a key role in the region’s ecology, history, and resource development.
• E. Fraser River
  The Fraser River is the longest river within British Columbia, Canada, flowing from the Rocky Mountains to the Pacific Ocean and serving as a major waterway for ecology, fisheries, and regional commerce in the Pacific Northwest.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Mackenzie River delta
Target entity description: The Mackenzie River delta is a vast Arctic wetland in northwestern Canada, characterized by a complex network of channels, lakes, and islands that form one of the largest river deltas in North America.

• A. Mackenzie River
  The Mackenzie River is the longest river system in Canada, flowing through the Northwest Territories to the Arctic Ocean and draining a vast portion of northwestern North America.
• B. Labrador River
  The Labrador River is a major waterway in the Labrador region of eastern Canada, contributing significantly to the area's drainage system and natural landscape.
• C. Yukon–Kuskokwim Delta
  The Yukon–Kuskokwim Delta is a vast, sparsely populated river delta in western Alaska known for its wetlands, rich subsistence lifestyle, and predominantly Central Alaskan Yup’ik communities.
• D. Athabasca River
  The Athabasca River is a major glacier-fed waterway in western Canada that flows through the Rocky Mountains and northern Alberta, playing a key role in the region’s ecology, history, and resource development.
• E. Fraser River
  The Fraser River is the longest river within British Columbia, Canada, flowing from the Rocky Mountains to the Pacific Ocean and serving as a major waterway for ecology, fisheries, and regional commerce in the Pacific Northwest.
• F. None of above. chosen