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: British Rail Second Generation EMU | Statement: [British Rail Class 321, family, British Rail Second Generation EMU]

Target entity: British Rail Second Generation EMU
Context triple: [British Rail Class 321, family, British Rail Second Generation EMU]

• A. British Rail Class 321 electric multiple units chosen
  The British Rail Class 321 electric multiple units are a series of suburban and commuter trains introduced in the late 1980s for use on electrified routes in the UK, known for their widespread service in the south-east of England and East Anglia.
• B. Southern Class 313 EMUs
  Southern Class 313 EMUs are dual-voltage electric multiple-unit trains used for suburban and commuter services in the Southern region of the UK rail network.
• C. Southern Class 377 EMUs
  Southern Class 377 EMUs are a fleet of modern electric multiple-unit commuter trains operated by Southern on suburban and regional routes in southeast England.
• D. British Rail Class 317 electric multiple units
  The British Rail Class 317 electric multiple units are a series of suburban electric trains introduced in the early 1980s for commuter services around London, known for their steel-bodied Mark 3–derived design and long service life.
• E. British Rail Class 318 electric multiple units
  The British Rail Class 318 electric multiple units are suburban EMU trains introduced in the mid-1980s for commuter services around Glasgow, Scotland, featuring steel-bodied construction and 25 kV AC overhead electrification.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.