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: Class 91 locomotive | Statement: [Mark 4 coaching stock, usedWith, Class 91 locomotive]

Target entity: Class 91 locomotive
Context triple: [Mark 4 coaching stock, usedWith, Class 91 locomotive]

• A. Class 90 locomotive
  The Class 90 locomotive is a British electric locomotive class introduced in the late 1980s, widely used for both high-speed passenger and heavy freight services on the UK rail network.
• B. Class 86 locomotive
  The Class 86 locomotive is a British electric locomotive class introduced in the 1960s for high-speed passenger and freight services on the West Coast Main Line and other electrified routes.
• C. Class 67 locomotive
  The Class 67 locomotive is a type of high-speed diesel-electric locomotive used on the British railway network for both passenger and freight services.
• D. Class 68 locomotive
  The Class 68 locomotive is a modern British diesel-electric locomotive used for passenger and freight services, known for its high performance, reliability, and distinctive angular design.
• E. Class 57 diesel locomotive
  The Class 57 diesel locomotive is a British mainline locomotive type, rebuilt from older Class 47s, widely used for both passenger and freight services including prestigious sleeper and charter trains.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Class 91 locomotive
Target entity description: The Class 91 locomotive is a high-speed electric locomotive used on Britain’s East Coast Main Line, designed for 140 mph operation and commonly paired with Mark 4 coaching stock.

• A. Class 90 locomotive
  The Class 90 locomotive is a British electric locomotive class introduced in the late 1980s, widely used for both high-speed passenger and heavy freight services on the UK rail network.
• B. Class 86 locomotive
  The Class 86 locomotive is a British electric locomotive class introduced in the 1960s for high-speed passenger and freight services on the West Coast Main Line and other electrified routes.
• C. Class 67 locomotive
  The Class 67 locomotive is a type of high-speed diesel-electric locomotive used on the British railway network for both passenger and freight services.
• D. Class 68 locomotive
  The Class 68 locomotive is a modern British diesel-electric locomotive used for passenger and freight services, known for its high performance, reliability, and distinctive angular design.
• E. Class 57 diesel locomotive
  The Class 57 diesel locomotive is a British mainline locomotive type, rebuilt from older Class 47s, widely used for both passenger and freight services including prestigious sleeper and charter trains.
• F. None of above. chosen