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: Mississippi River valley | Statement: [Cliffs of Missouri, partOf, Mississippi River valley]

Target entity: Mississippi River valley
Context triple: [Cliffs of Missouri, partOf, Mississippi River valley]

• A. Mississippi River valley chosen
  The Mississippi River valley is a vast, fertile lowland region in the central United States shaped by the Mississippi River, historically crucial for agriculture, trade, and settlement.
• B. Mississippi River basin
  The Mississippi River basin is the vast drainage area of the Mississippi River system, encompassing much of the central United States and parts of Canada and covering one of the largest river basins in the world.
• C. Upper Mississippi Valley
  The Upper Mississippi Valley is a region along the upper course of the Mississippi River, encompassing parts of several Midwestern U.S. states and historically significant for trade, settlement, and military activity.
• D. Rock River valley
  Rock River valley is a historically significant river valley region in the Upper Midwest of the United States, known as a traditional homeland and cultural landscape of the Ho-Chunk people.
• E. Big Rivers Region
  The Big Rivers Region is a geographic area in Australia's Northern Territory encompassing the town of Katherine and its surrounding communities.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.