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 watershed | Statement: [Monocacy River, riverSystem, Potomac River watershed]

Target entity: Potomac River watershed
Context triple: [Monocacy River, riverSystem, Potomac River watershed]

• A. 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.
• B. 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.
• 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
  The Severn River is a tidal estuary in Maryland that flows into the Chesapeake Bay and is known for bordering the city of Annapolis and the U.S. Naval Academy.
• E. Rappahannock River
  The Rappahannock River is a major waterway in eastern Virginia that flows from the Blue Ridge Mountains to the Chesapeake Bay and played a significant role in American colonial history and the Civil War.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.