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: Arkansas River Valley | Statement: [Mosquito Range, separates, Arkansas River Valley]

Target entity: Arkansas River Valley
Context triple: [Mosquito Range, separates, Arkansas River Valley]

• A. Arkansas River region
  The Arkansas River region is a historic and culturally significant area in the central United States shaped by the course of the Arkansas River, long serving as a corridor for Indigenous peoples, trade, and settlement.
• B. Arkansas River basin chosen
  The Arkansas River basin is the extensive watershed that collects precipitation and runoff from parts of Colorado, Kansas, Oklahoma, and Arkansas, ultimately feeding the Arkansas River, a major tributary of the Mississippi River.
• C. Missouri River valley
  The Missouri River valley is a fertile and historically significant region of the central United States that has long served as a homeland and travel corridor for numerous Indigenous peoples and later European-American settlers.
• D. Platte River valley region
  The Platte River valley region is a broad, fertile corridor in Nebraska shaped by the Platte River, known for its agriculture, transportation routes, and critical habitat for migratory birds.
• E. Pecos River Valley
  Pecos River Valley is a fertile and scenic river valley in southeastern New Mexico known for its agricultural lands, unique desert wetlands, and recreational areas.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.