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: [Council Bluffs, Iowa, locatedOnRiver, Missouri River]

Target entity: Missouri River
Context triple: [Council Bluffs, Iowa, locatedOnRiver, Missouri River]

• A. Mississippi
  Mississippi is a U.S. state in the Deep South known for the Mississippi River, its influential role in American history and culture—especially blues music—and its largely rural, agricultural landscape.
• B. Columbia River
  The Columbia River is a major river of the Pacific Northwest that forms much of the border between Oregon and Washington and is vital for hydroelectric power, transportation, and regional ecosystems.
• C. Missouri
  Missouri is a U.S. state in the Midwest known for its major cities like St. Louis and Kansas City, its role as a historic gateway to the American West, and its diverse mix of agricultural and industrial economies.
• D. Tennessee River
  The Tennessee River is a major waterway in the southeastern United States that flows through several states and serves as a key resource for navigation, power generation, and regional development.
• E. Tennessee Valley
  The Tennessee Valley is a region in the southeastern United States centered around the Tennessee River, known for its historically rural economy, flood-prone landscape, and large-scale development through New Deal-era infrastructure and power projects.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"

Entity: Missouri River
Triple: [Council Bluffs, Iowa, locatedOnRiver, 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.

Target entity: Missouri River
Target entity description: 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.

• A. Mississippi
  Mississippi is a U.S. state in the Deep South known for the Mississippi River, its influential role in American history and culture—especially blues music—and its largely rural, agricultural landscape.
• B. Columbia River
  The Columbia River is a major river of the Pacific Northwest that forms much of the border between Oregon and Washington and is vital for hydroelectric power, transportation, and regional ecosystems.
• C. Missouri
  Missouri is a U.S. state in the Midwest known for its major cities like St. Louis and Kansas City, its role as a historic gateway to the American West, and its diverse mix of agricultural and industrial economies.
• D. Tennessee River
  The Tennessee River is a major waterway in the southeastern United States that flows through several states and serves as a key resource for navigation, power generation, and regional development.
• E. Tennessee Valley
  The Tennessee Valley is a region in the southeastern United States centered around the Tennessee River, known for its historically rural economy, flood-prone landscape, and large-scale development through New Deal-era infrastructure and power projects.
• F. None of above. chosen