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: LMS Princess Royal Class | Statement: [London, Midland and Scottish Railway, notableLocomotiveClass, LMS Princess Royal Class]

Target entity: LMS Princess Royal Class
Context triple: [London, Midland and Scottish Railway, notableLocomotiveClass, LMS Princess Royal Class]

• A. Class 170 Turbostar
  The Class 170 Turbostar is a British diesel multiple-unit train widely used for regional and intercity services across the UK rail network.
• B. Marchioness
  A Marchioness is a noblewoman holding the rank of marquess or marquis, positioned above a baroness in the hierarchy of European aristocratic titles.
• C. Royal Yacht Britannia
  The Royal Yacht Britannia is the former British royal family yacht, now a museum ship permanently moored in Edinburgh’s Port of Leith.
• D. M7 electric multiple unit
  The M7 electric multiple unit is a modern commuter rail car class built for high-frequency, third-rail electrified service, notably operating on New York’s Long Island Rail Road and similar regional rail networks.
• E. Class 397 Civity EMU
  The Class 397 Civity EMU is a modern high-speed electric multiple unit built by CAF for intercity services in the UK, notably on routes linking north of England cities with Scotland.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"

Entity: LMS Princess Royal Class
Triple: [London, Midland and Scottish Railway, notableLocomotiveClass, LMS Princess Royal Class]

The LMS Princess Royal Class was a series of powerful British express passenger steam locomotives built in the 1930s for high-speed mainline services on the London, Midland and Scottish Railway.

Target entity: LMS Princess Royal Class
Target entity description: The LMS Princess Royal Class was a series of powerful British express passenger steam locomotives built in the 1930s for high-speed mainline services on the London, Midland and Scottish Railway.

• A. Class 170 Turbostar
  The Class 170 Turbostar is a British diesel multiple-unit train widely used for regional and intercity services across the UK rail network.
• B. Marchioness
  A Marchioness is a noblewoman holding the rank of marquess or marquis, positioned above a baroness in the hierarchy of European aristocratic titles.
• C. Royal Yacht Britannia
  The Royal Yacht Britannia is the former British royal family yacht, now a museum ship permanently moored in Edinburgh’s Port of Leith.
• D. M7 electric multiple unit
  The M7 electric multiple unit is a modern commuter rail car class built for high-frequency, third-rail electrified service, notably operating on New York’s Long Island Rail Road and similar regional rail networks.
• E. Class 397 Civity EMU
  The Class 397 Civity EMU is a modern high-speed electric multiple unit built by CAF for intercity services in the UK, notably on routes linking north of England cities with Scotland.
• F. None of above. chosen