WM Class H-9 2-8-0
E307594
The WM Class H-9 2-8-0 was a class of powerful Consolidation-type steam freight locomotives used by the Western Maryland Railway in the early to mid-20th century.
All labels observed (1)
| Label | Occurrences |
|---|---|
| WM Class H-9 2-8-0 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2892751 — 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: WM Class H-9 2-8-0 Context triple: [Western Maryland Railway, notableLocomotiveClass, WM Class H-9 2-8-0]
-
A.
Forney locomotive
The Forney locomotive is a compact 19th-century steam tank locomotive type, notable for its rigid wheelbase and rear-mounted fuel and water tanks, widely used on urban elevated and commuter railways.
-
B.
Union Pacific No. 119
Union Pacific No. 119 was the steam locomotive that represented the Union Pacific Railroad at the 1869 Golden Spike ceremony marking the completion of the First Transcontinental Railroad.
-
C.
Atchison Topeka and Santa Fe 4-8-4 locomotive
The Atchison, Topeka and Santa Fe 4-8-4 locomotive is a powerful steam engine from the famed Santa Fe Railway, known for hauling high-speed passenger and heavy freight trains across the American West in the mid-20th century.
-
D.
Pullman-Standard
Pullman-Standard was a major American railcar manufacturer known for producing a wide range of passenger and freight cars throughout the 20th century.
-
E.
BR Standard Class 4 steam locomotives
BR Standard Class 4 steam locomotives are mid-20th-century British Railways mixed-traffic steam engines designed for versatility and efficiency on both passenger and freight services.
- 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: WM Class H-9 2-8-0 Target entity description: The WM Class H-9 2-8-0 was a class of powerful Consolidation-type steam freight locomotives used by the Western Maryland Railway in the early to mid-20th century.
-
A.
Forney locomotive
The Forney locomotive is a compact 19th-century steam tank locomotive type, notable for its rigid wheelbase and rear-mounted fuel and water tanks, widely used on urban elevated and commuter railways.
-
B.
Union Pacific No. 119
Union Pacific No. 119 was the steam locomotive that represented the Union Pacific Railroad at the 1869 Golden Spike ceremony marking the completion of the First Transcontinental Railroad.
-
C.
Atchison Topeka and Santa Fe 4-8-4 locomotive
The Atchison, Topeka and Santa Fe 4-8-4 locomotive is a powerful steam engine from the famed Santa Fe Railway, known for hauling high-speed passenger and heavy freight trains across the American West in the mid-20th century.
-
D.
Pullman-Standard
Pullman-Standard was a major American railcar manufacturer known for producing a wide range of passenger and freight cars throughout the 20th century.
-
E.
BR Standard Class 4 steam locomotives
BR Standard Class 4 steam locomotives are mid-20th-century British Railways mixed-traffic steam engines designed for versatility and efficiency on both passenger and freight services.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
Consolidation-type locomotive
ⓘ
freight locomotive ⓘ steam locomotive class ⓘ |
| category |
2-8-0 locomotives
ⓘ
Western Maryland Railway locomotives ⓘ freight steam locomotives ⓘ |
| configurationName | Consolidation ⓘ |
| countryOfOperation |
United States of America
ⓘ
surface form:
United States
|
| era |
early 20th century
ⓘ
mid-20th century ⓘ |
| gauge | standard gauge ⓘ |
| locomotiveType | tender locomotive ⓘ |
| operatedBy | Western Maryland Railway ⓘ |
| powerType | steam ⓘ |
| primaryRole | heavy freight ⓘ |
| railroad | Western Maryland Railway ⓘ |
| railwayCompanyType | Class I railroad ⓘ |
| regionServed |
Appalachian region of the United States
ⓘ
surface form:
Appalachian region
Maryland ⓘ Pennsylvania ⓘ West Virginia ⓘ |
| traction | adhesion ⓘ |
| usedFor | freight service ⓘ |
| usedIn | steam era ⓘ |
| wheelArrangement | 2-8-0 ⓘ |
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: WM Class H-9 2-8-0 Description of subject: The WM Class H-9 2-8-0 was a class of powerful Consolidation-type steam freight locomotives used by the Western Maryland Railway in the early to mid-20th century.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.