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: American South | Statement: [Arkansas River region, isPartOf, American South]

Target entity: American South
Context triple: [Arkansas River region, isPartOf, American South]

• A. Southern United States chosen
  The Southern United States is a culturally distinct region of the country known for its historical ties to the Confederacy, unique traditions in music and cuisine, and a warm climate spanning from the Atlantic coast to the Gulf of Mexico.
• B. Southern
  Southern is a British train operating company that provides passenger rail services in southern England, including routes through London and the surrounding regions.
• C. Upper South
  The Upper South is a subregion of the United States generally referring to the northernmost tier of Southern states, often including Kentucky, Virginia, West Virginia, Tennessee, and sometimes parts of neighboring states, distinguished historically and culturally from the Deep South.
• D. Southeastern
  Southeastern is a British train operating company that runs passenger rail services across southeast London and the counties of Kent and East Sussex.
• E. Mid-South
  Mid-South is a cultural and economic region of the south-central United States centered around Memphis and encompassing parts of Tennessee, Mississippi, Arkansas, and nearby areas.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.