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 Siouan | Statement: [Lakota language, subfamily, Missouri River Siouan]

Target entity: Missouri River Siouan
Context triple: [Lakota language, subfamily, Missouri River Siouan]

• A. Osage River
  The Osage River is a major river in central Missouri known for its role in regional hydroelectric power generation and recreation, including the creation of the Lake of the Ozarks.
• B. 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.
• C. Otoe
  The Otoe are a Native American tribe of the Siouan language family historically located along the Missouri River in the central United States.
• D. River Cree
  River Cree is a river in southwestern Scotland that flows through Galloway to the Solway Firth, historically important for local industry, transport, and salmon fishing.
• E. Nakota
  The Nakota are a Native American people of the Northern Plains, closely related to the Dakota and Lakota, with a rich cultural heritage that includes distinct Siouan language dialects, ceremonial traditions, and historical ties to regions of present-day Canada and the United States.
• 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 Siouan
Triple: [Lakota language, subfamily, Missouri River Siouan]

Missouri River Siouan is a branch of the Siouan language family comprising closely related languages historically spoken along the Missouri River in the North American Great Plains.

Target entity: Missouri River Siouan
Target entity description: Missouri River Siouan is a branch of the Siouan language family comprising closely related languages historically spoken along the Missouri River in the North American Great Plains.

• A. Cheyenne River
  The Cheyenne River is a major tributary of the upper Great Plains that flows through Wyoming and South Dakota before joining the Missouri River.
• B. Osage River
  The Osage River is a major river in central Missouri known for its role in regional hydroelectric power generation and recreation, including the creation of the Lake of the Ozarks.
• C. 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.
• D. Otoe chosen
  The Otoe are a Native American tribe of the Siouan language family historically located along the Missouri River in the central United States.
• E. River Cree
  River Cree is a river in southwestern Scotland that flows through Galloway to the Solway Firth, historically important for local industry, transport, and salmon fishing.
• F. None of above.