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: Potomac River basin | Statement: [District Wharf Marina, waterbody, Potomac River basin]

Target entity: Potomac River basin
Context triple: [District Wharf Marina, waterbody, Potomac River basin]

• A. Potomac River region
  The Potomac River region is a historically significant area along the Potomac River in the eastern United States, known for its early colonial estates, ties to prominent Virginia families, and proximity to the nation’s capital.
• B. Potomac River chosen
  The Potomac River is a major waterway in the Mid-Atlantic United States that flows through the Appalachian region and forms part of the boundary between Maryland, Virginia, and Washington, D.C.
• C. Shenandoah River
  The Shenandoah River is a scenic waterway flowing through Virginia and West Virginia, famed for its pastoral valleys, Blue Ridge Mountain backdrop, and prominence in American folk music and Civil War history.
• D. Severn River system
  The Severn River system is the interconnected network of the River Severn and its tributaries, forming one of the major drainage basins in Great Britain.
• E. Severn River
  The Severn River is a major river in northern Ontario, Canada, that flows into Hudson Bay and has historically served as an important route for Indigenous peoples and the fur trade.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.