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: BR Standard Class 7 Britannia | Statement: [LMS Coronation Class, successorClass, BR Standard Class 7 Britannia]

Target entity: BR Standard Class 7 Britannia
Context triple: [LMS Coronation Class, successorClass, BR Standard Class 7 Britannia]

• A. 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.
• B. King George V class
  The King George V class was a group of British Royal Navy battleships built in the early 20th century that served prominently during World War I.
• C. LMS Coronation Class
  The LMS Coronation Class was a fleet of powerful British express passenger steam locomotives built for the London, Midland and Scottish Railway in the 1930s, renowned for their streamlined design and high-speed performance.
• D. RMS Queen Elizabeth
  RMS Queen Elizabeth was a famous mid-20th-century British ocean liner operated by the Cunard Line, renowned for its transatlantic service and later use as a troopship during World War II.
• E. HMS Britannia
  HMS Britannia was a 19th-century Royal Navy training ship that served as the principal officer cadet training establishment before being replaced by the shore-based Britannia Royal Naval College at Dartmouth.
• 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: BR Standard Class 7 Britannia
Triple: [LMS Coronation Class, successorClass, BR Standard Class 7 Britannia]

The BR Standard Class 7 Britannia was a class of British Railways 4-6-2 express passenger steam locomotives introduced in the early 1950s as part of the standardization program near the end of the steam era.

Target entity: BR Standard Class 7 Britannia
Target entity description: The BR Standard Class 7 Britannia was a class of British Railways 4-6-2 express passenger steam locomotives introduced in the early 1950s as part of the standardization program near the end of the steam era.

• A. 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.
• B. King George V class
  The King George V class was a group of British Royal Navy battleships built in the early 20th century that served prominently during World War I.
• C. LMS Coronation Class
  The LMS Coronation Class was a fleet of powerful British express passenger steam locomotives built for the London, Midland and Scottish Railway in the 1930s, renowned for their streamlined design and high-speed performance.
• D. RMS Queen Elizabeth
  RMS Queen Elizabeth was a famous mid-20th-century British ocean liner operated by the Cunard Line, renowned for its transatlantic service and later use as a troopship during World War II.
• E. HMS Britannia
  HMS Britannia was a 19th-century Royal Navy training ship that served as the principal officer cadet training establishment before being replaced by the shore-based Britannia Royal Naval College at Dartmouth.
• F. None of above. chosen