Triple

Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).

Phrase: Yukon River basin in Alaska | Statement: [Koyukon Athabaskan, region, Yukon River basin in Alaska]

Target entity: Yukon River basin in Alaska
Context triple: [Koyukon Athabaskan, region, Yukon River basin in Alaska]

• A. Yukon River region
  The Yukon River region is a vast subarctic area of northwestern Canada and Alaska defined by the Yukon River and its tributaries, known for its Indigenous cultures, remote wilderness, and historical role in northern trade and the Klondike Gold Rush.
• B. Yukon River chosen
  The Yukon River is a major waterway in northwestern North America that flows through Canada’s Yukon Territory and Alaska to the Bering Sea, historically significant for transportation, Indigenous cultures, and the Klondike Gold Rush.
• C. Alaska river system
  The Alaska river system is the extensive network of rivers and tributaries that drain Alaska’s diverse landscapes, supporting rich ecosystems, transportation, and subsistence activities across the state.
• D. Nushagak River basin
  The Nushagak River basin is a major watershed in southwestern Alaska known for its pristine ecosystems and highly productive wild salmon fisheries.
• E. Tanana Valley
  The Tanana Valley is a broad interior region of Alaska defined by the Tanana River and known for its boreal forests, permafrost landscapes, and subarctic climate.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.