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: Boston and Maine 4-6-2 No. 3713 | Statement: [Steamtown National Historic Site, hasLocomotive, Boston and Maine 4-6-2 No. 3713]

Target entity: Boston and Maine 4-6-2 No. 3713
Context triple: [Steamtown National Historic Site, hasLocomotive, Boston and Maine 4-6-2 No. 3713]

• A. USRA Light Mountain 4-8-2
  The USRA Light Mountain 4-8-2 was a standardized World War I–era American steam locomotive design used by multiple railroads for mixed-traffic service under the United States Railroad Administration.
• B. USRA Heavy Mountain 4-8-2
  The USRA Heavy Mountain 4-8-2 was a standardized World War I–era American steam locomotive design built for heavy passenger and fast freight service, featuring a 4-8-2 wheel arrangement and robust construction for demanding mainline duties.
• C. USRA Heavy Pacific 4-6-2
  The USRA Heavy Pacific 4-6-2 was a standardized heavy passenger steam locomotive design used by multiple American railroads during the United States Railroad Administration era in World War I.
• D. USRA Heavy Mikado 2-8-2
  The USRA Heavy Mikado 2-8-2 was a standardized World War I–era American steam freight locomotive design known for its robust construction, high tractive effort, and widespread use across multiple railroads.
• E. USRA Light Mikado 2-8-2
  The USRA Light Mikado 2-8-2 was a widely used World War I–era American freight steam locomotive type designed for balanced performance and standardized construction across multiple railroads.
• 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: Boston and Maine 4-6-2 No. 3713
Triple: [Steamtown National Historic Site, hasLocomotive, Boston and Maine 4-6-2 No. 3713]

Boston and Maine 4-6-2 No. 3713 is a preserved Pacific-type steam locomotive from the Boston and Maine Railroad, now maintained as a historic exhibit at Steamtown.

Target entity: Boston and Maine 4-6-2 No. 3713
Target entity description: Boston and Maine 4-6-2 No. 3713 is a preserved Pacific-type steam locomotive from the Boston and Maine Railroad, now maintained as a historic exhibit at Steamtown.

• A. USRA Light Mountain 4-8-2
  The USRA Light Mountain 4-8-2 was a standardized World War I–era American steam locomotive design used by multiple railroads for mixed-traffic service under the United States Railroad Administration.
• B. USRA Heavy Mountain 4-8-2
  The USRA Heavy Mountain 4-8-2 was a standardized World War I–era American steam locomotive design built for heavy passenger and fast freight service, featuring a 4-8-2 wheel arrangement and robust construction for demanding mainline duties.
• C. USRA Heavy Pacific 4-6-2
  The USRA Heavy Pacific 4-6-2 was a standardized heavy passenger steam locomotive design used by multiple American railroads during the United States Railroad Administration era in World War I.
• D. USRA Heavy Mikado 2-8-2
  The USRA Heavy Mikado 2-8-2 was a standardized World War I–era American steam freight locomotive design known for its robust construction, high tractive effort, and widespread use across multiple railroads.
• E. USRA Light Mikado 2-8-2
  The USRA Light Mikado 2-8-2 was a widely used World War I–era American freight steam locomotive type designed for balanced performance and standardized construction across multiple railroads.
• F. None of above. chosen