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: River Walbrook | Statement: [Walbrook, City of London, namedAfter, River Walbrook]

Target entity: River Walbrook
Context triple: [Walbrook, City of London, namedAfter, River Walbrook]

• A. River Ryton
  River Ryton is a small river in Nottinghamshire, England, that flows through towns such as Worksop before joining the River Idle.
• B. Dagenham Brook
  Dagenham Brook is a minor watercourse in East London that serves as a tributary of the River Lea, flowing through parts of the London Borough of Waltham Forest.
• C. Holborn River
  The Holborn River is a historic subterranean watercourse in central London that once flowed openly through the Holborn area before being culverted and integrated into the city’s drainage system.
• D. River Wandle
  The River Wandle is a chalk stream in South London, England, that flows through boroughs such as Croydon, Sutton, Merton, and Wandsworth before joining the River Thames.
• E. River Lea
  The River Lea is a major tributary of the River Thames in southeast England, flowing through Bedfordshire, Hertfordshire, and Greater London and historically supporting navigation, industry, and water supply for the region.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: River Walbrook
Target entity description: River Walbrook was a now largely subterranean river that once flowed through the heart of the City of London, historically shaping its topography and development.

• A. River Ryton
  River Ryton is a small river in Nottinghamshire, England, that flows through towns such as Worksop before joining the River Idle.
• B. Dagenham Brook
  Dagenham Brook is a minor watercourse in East London that serves as a tributary of the River Lea, flowing through parts of the London Borough of Waltham Forest.
• C. Holborn River chosen
  The Holborn River is a historic subterranean watercourse in central London that once flowed openly through the Holborn area before being culverted and integrated into the city’s drainage system.
• D. River Wandle
  The River Wandle is a chalk stream in South London, England, that flows through boroughs such as Croydon, Sutton, Merton, and Wandsworth before joining the River Thames.
• E. River Lea
  The River Lea is a major tributary of the River Thames in southeast England, flowing through Bedfordshire, Hertfordshire, and Greater London and historically supporting navigation, industry, and water supply for the region.
• F. None of above.