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: Missouri River system | Statement: [Vermillion River (indirectly via Missouri system), feedsInto, Missouri River system]

Target entity: Missouri River system
Context triple: [Vermillion River (indirectly via Missouri system), feedsInto, Missouri River system]

• A. Missouri River
  The Missouri River is the longest river in North America, flowing from the Rocky Mountains of western Montana to join the Mississippi River near St. Louis.
• B. Missouri River Basin chosen
  The Missouri River Basin is a vast drainage area in the central United States that collects water from the Missouri River and its tributaries across multiple states and parts of Canada.
• 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. Columbia–Snake River System
  The Columbia–Snake River System is a major interconnected network of rivers and reservoirs in the Pacific Northwest that serves as a critical corridor for navigation, hydropower generation, irrigation, and regional commerce.
• E. Mississippi River
  The Mississippi River is one of the longest and most significant rivers in the United States, serving as a major waterway for transportation, commerce, and drainage across much of the central continent.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.