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 Underground power supply system | Statement: [Lots Road Power Station, partOf, London Underground power supply system]

Target entity: London Underground power supply system
Context triple: [Lots Road Power Station, partOf, London Underground power supply system]

• A. London Underground four-rail system chosen
  The London Underground four-rail system is a distinctive electric traction arrangement using separate positive and negative conductor rails in addition to the running rails, designed to power and protect the network’s deep-level and sub-surface trains.
• B. London Underground and Elizabeth line
  The London Underground and Elizabeth line are major rail networks in London, with the former being the city’s historic metro system and the latter a modern high-capacity cross-city railway.
• C. London Underground
  The London Underground is a rapid transit system serving Greater London and surrounding areas, famous as one of the world's oldest and most extensive metro networks.
• D. London Underground depots
  London Underground depots are maintenance and stabling facilities where trains of the London Underground network are stored, serviced, and prepared for operation.
• E. London Underground District line
  The London Underground District line is a major Tube line in London running from the western suburbs through central London to the east, serving numerous key residential and commercial areas.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.