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: London sewer network | Statement: [River Fleet (culverted), partOf, London sewer network]

Target entity: London sewer network
Context triple: [River Fleet (culverted), partOf, London sewer network]

• A. London sewer system chosen
  The London sewer system is a vast 19th-century underground infrastructure project that transformed the city’s sanitation and public health by efficiently removing waste and reducing waterborne diseases.
• B. Paris sewer system
  The Paris sewer system is an extensive underground network of tunnels and infrastructure beneath the city that manages wastewater and drainage and has become notable for its engineering, history, and guided tours.
• C. London water supply system
  The London water supply system is the extensive network of reservoirs, treatment works, pipes, and infrastructure that abstracts, stores, purifies, and distributes drinking water to the Greater London area.
• D. Cambridge water supply system
  The Cambridge water supply system is the municipal infrastructure network that sources, treats, stores, and distributes drinking water to the city of Cambridge, Massachusetts.
• E. Manchester canal network
  The Manchester canal network is an interconnected system of historic waterways that supported the city’s industrial growth by linking its mills, warehouses, and docks to regional and national transport routes.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.