B&O No. 2 Atlantic
E594343
B&O No. 2 Atlantic is a historic Baltimore & Ohio Railroad steam locomotive preserved as a prominent example of early American passenger train power.
All labels observed (1)
| Label | Occurrences |
|---|---|
| B&O No. 2 Atlantic canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6462627 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: B&O No. 2 Atlantic Context triple: [B&O Railroad Museum, notableExhibit, B&O No. 2 Atlantic]
-
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.
Shay locomotive
The Shay locomotive is a geared steam locomotive design, widely used on logging and industrial railroads for its exceptional low-speed power and ability to handle steep grades and sharp curves.
-
C.
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.
-
D.
LMS Jubilee Class
The LMS Jubilee Class was a class of British steam locomotives built in the 1930s for express passenger services on the London, Midland and Scottish Railway.
-
E.
LNER Class A4 4468 Mallard
LNER Class A4 4468 Mallard is a famous British steam locomotive best known for holding the world speed record for steam traction, set in 1938.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: B&O No. 2 Atlantic Target entity description: B&O No. 2 Atlantic is a historic Baltimore & Ohio Railroad steam locomotive preserved as a prominent example of early American passenger train power.
-
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.
Shay locomotive
The Shay locomotive is a geared steam locomotive design, widely used on logging and industrial railroads for its exceptional low-speed power and ability to handle steep grades and sharp curves.
-
C.
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.
-
D.
LMS Jubilee Class
The LMS Jubilee Class was a class of British steam locomotives built in the 1930s for express passenger services on the London, Midland and Scottish Railway.
-
E.
LNER Class A4 4468 Mallard
LNER Class A4 4468 Mallard is a famous British steam locomotive best known for holding the world speed record for steam traction, set in 1938.
- F. None of above. chosen
Statements (14)
| Predicate | Object |
|---|---|
| instanceOf | steam locomotive ⓘ |
| category | Baltimore and Ohio Railroad locomotives ⓘ |
| continent | North America ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| gauge | standard gauge ⓘ |
| heritageStatus | preserved locomotive ⓘ |
| locomotiveNumber | 2 ⓘ |
| name | B&O No. 2 Atlantic ⓘ |
| operator | Baltimore and Ohio Railroad ⓘ |
| powerType | steam ⓘ |
| railroad | B&O ⓘ |
| railway | Baltimore and Ohio Railroad ⓘ |
| significance | example of early American passenger train power ⓘ |
| use | passenger service ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: B&O No. 2 Atlantic Description of subject: B&O No. 2 Atlantic is a historic Baltimore & Ohio Railroad steam locomotive preserved as a prominent example of early American passenger train power.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.