Copper River Delta

Target entity: Copper River Delta
Context triple: [Copper River, hasMouthFeature, Copper River Delta]

• A. 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.
• B. Nestucca River
  The Nestucca River is a coastal river in northwestern Oregon known for its scenic forested corridor, salmon and steelhead fisheries, and popular recreation opportunities such as fishing, kayaking, and camping.
• C. Columbia River estuary
  The Columbia River estuary is the broad, tidally influenced transition zone where the Columbia River meets the Pacific Ocean, supporting rich ecosystems, major shipping routes, and coastal communities in the Pacific Northwest.
• D. Mackenzie River delta
  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.
• E. Willapa Bay
  Willapa Bay is a large, shallow estuarine bay on the southwest coast of Washington State, known for its rich shellfish beds, wildlife habitat, and relatively undeveloped shoreline.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Copper River Delta
Target entity description: The Copper River Delta is a vast, ecologically rich coastal wetland in south-central Alaska, renowned for its extensive tidal flats, wetlands, and critical habitat for migratory birds and salmon.

• A. 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.
• B. Nestucca River
  The Nestucca River is a coastal river in northwestern Oregon known for its scenic forested corridor, salmon and steelhead fisheries, and popular recreation opportunities such as fishing, kayaking, and camping.
• C. Columbia River estuary
  The Columbia River estuary is the broad, tidally influenced transition zone where the Columbia River meets the Pacific Ocean, supporting rich ecosystems, major shipping routes, and coastal communities in the Pacific Northwest.
• D. Mackenzie River delta
  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.
• E. Willapa Bay
  Willapa Bay is a large, shallow estuarine bay on the southwest coast of Washington State, known for its rich shellfish beds, wildlife habitat, and relatively undeveloped shoreline.
• F. None of above. chosen