B&O No. 4500
E595293
B&O No. 4500 is a historic Baltimore & Ohio Railroad steam locomotive preserved for its significance in early 20th-century American railroading.
All labels observed (2)
| Label | Occurrences |
|---|---|
| B&O No. 4500 canonical | 2 |
| B&O Big Six 2-10-2 locomotives | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6462629 — 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. 4500 Context triple: [B&O Railroad Museum, notableExhibit, B&O No. 4500]
-
A.
B&O No. 25 William Mason
B&O No. 25 "William Mason" is a preserved 19th-century steam locomotive famed for its historic design and frequent use in period films and railroad heritage displays.
-
B.
B&O No. 2 Atlantic
B&O No. 2 Atlantic is a historic Baltimore & Ohio Railroad steam locomotive preserved as a prominent example of early American passenger train power.
-
C.
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.
-
D.
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.
-
E.
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.
- 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. 4500 Target entity description: B&O No. 4500 is a historic Baltimore & Ohio Railroad steam locomotive preserved for its significance in early 20th-century American railroading.
-
A.
B&O No. 25 William Mason
B&O No. 25 "William Mason" is a preserved 19th-century steam locomotive famed for its historic design and frequent use in period films and railroad heritage displays.
-
B.
B&O No. 2 Atlantic
B&O No. 2 Atlantic is a historic Baltimore & Ohio Railroad steam locomotive preserved as a prominent example of early American passenger train power.
-
C.
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.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Statements (20)
| Predicate | Object |
|---|---|
| instanceOf |
historic railroad locomotive
ⓘ
steam locomotive ⓘ |
| category |
Baltimore and Ohio Railroad locomotives
ⓘ
Preserved steam locomotives of the United States ⓘ |
| continent | North America ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| gauge | standard gauge ⓘ |
| heritageDesignationReason | historical significance in American railroading ⓘ |
| heritageStatus | preserved locomotive ⓘ |
| location |
B&O Railroad Museum
ⓘ
Baltimore, Maryland ⓘ
linked to:
Baltimore, Maryland, United States
|
| operator | Baltimore and Ohio Railroad ⓘ |
| originalOwner | Baltimore and Ohio Railroad ⓘ |
| owner | B&O Railroad Museum ⓘ |
| partOf |
Baltimore and Ohio Railroad locomotive fleet
ⓘ
linked to:
Baltimore and Ohio Railroad locomotives
|
| powerType | steam ⓘ |
| preservationStatus | museum exhibit ⓘ |
| railwayLine | Baltimore and Ohio Railroad ⓘ |
| significance | early 20th-century American railroading ⓘ |
| usedFor | rail transport ⓘ |
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. 4500 Description of subject: B&O No. 4500 is a historic Baltimore & Ohio Railroad steam locomotive preserved for its significance in early 20th-century American railroading.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: B&O No. 4500