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 | Statement: [Omaha–Council Bluffs metropolitan area, locatedOn, Missouri River]

Target entity: Missouri River
Context triple: [Omaha–Council Bluffs metropolitan area, locatedOn, Missouri River]

• A. Missouri River chosen
  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. 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.
• C. Red River of the North
  The Red River of the North is a northward-flowing river forming much of the border between North Dakota and Minnesota before continuing through Manitoba to Lake Winnipeg, and is known for its fertile valley and frequent flooding.
• D. Kansas River
  The Kansas River is a major river in northeastern Kansas that flows eastward to join the Missouri River, forming an important waterway and watershed in the central United States.
• E. Minnesota River
  The Minnesota River is a major tributary of the Mississippi River in southern Minnesota, flowing through agricultural and prairie landscapes before joining the Mississippi near the Twin Cities.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.