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: Dadu River valley | Statement: [Luding County, hasRiverValley, Dadu River valley]

Target entity: Dadu River valley
Context triple: [Luding County, hasRiverValley, Dadu River valley]

• A. Dadu River region chosen
  The Dadu River region is a mountainous area in southwestern China known as a key homeland of Qiangic-speaking ethnic groups and part of the culturally diverse eastern Tibetan Plateau corridor.
• B. Huab River valley
  The Huab River valley is a remote, largely dry river corridor in Namibia known for its rugged desert landscapes and populations of desert-adapted wildlife, including elephants.
• C. Jiu River valley
  The Jiu River valley is a significant mountain valley in southwestern Romania that cuts through the Southern Carpathians, forming an important natural corridor and hosting several industrial and mining towns.
• D. Tawi River valley
  Tawi River valley is a scenic river valley in the Jammu region of India, known for its picturesque landscapes and views from historic sites such as Bahu Fort.
• E. Jinsha River valley
  The Jinsha River valley is a deep, rugged gorge region in southwestern China carved by the upper Yangtze River, known for its dramatic landscapes, hydropower resources, and rich mineral deposits.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.