Norfolk and Western Class A

E387453

articulated locomotive class steam locomotive class

Norfolk and Western Class A was a series of powerful articulated steam locomotives built for high-speed freight service on the Norfolk and Western Railway in the mid-20th century.

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All labels observed (3)

Label	Occurrences
Norfolk and Western 1218	1
Norfolk and Western Class A canonical	1
Norfolk and Western Class Y	1

How this entity was disambiguated

This entity first appeared as the object of triple T3773200 — 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: Norfolk and Western Class A
Context triple: [Norfolk and Western Railway, notableLocomotiveClass, Norfolk and Western Class A]

A. Norfolk and Western Class J
The Norfolk and Western Class J was a famed series of streamlined 4-8-4 steam locomotives renowned for their power, efficiency, and elegant design, used primarily for high-speed passenger service in the mid-20th century United States.
B. EMD GP40-2H
The EMD GP40-2H is a rebuilt, passenger-equipped variant of the EMD GP40-2 diesel-electric locomotive, featuring head-end power for commuter rail service.
C. WM Class I-2 2-10-0
WM Class I-2 2-10-0 was a powerful Decapod-type steam locomotive class used by the Western Maryland Railway primarily for heavy freight service over steep grades.
D. 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.
E. 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.
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: Norfolk and Western Class A
Target entity description: Norfolk and Western Class A was a series of powerful articulated steam locomotives built for high-speed freight service on the Norfolk and Western Railway in the mid-20th century.

A. Norfolk and Western Class J
The Norfolk and Western Class J was a famed series of streamlined 4-8-4 steam locomotives renowned for their power, efficiency, and elegant design, used primarily for high-speed passenger service in the mid-20th century United States.
B. EMD GP40-2H
The EMD GP40-2H is a rebuilt, passenger-equipped variant of the EMD GP40-2 diesel-electric locomotive, featuring head-end power for commuter rail service.
C. WM Class I-2 2-10-0
WM Class I-2 2-10-0 was a powerful Decapod-type steam locomotive class used by the Western Maryland Railway primarily for heavy freight service over steep grades.
D. 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.
E. 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.
F. None of above. chosen

Statements (49)

Predicate	Object
instanceOf	articulated locomotive class ⓘ steam locomotive class ⓘ
boilerPressure	2.07 MPa ⓘ 300 psi ⓘ
buildEndDate	1950 ⓘ
builder	Norfolk and Western Railway Roanoke Shops ⓘ linked to: Roanoke Shops
buildPeriod	1936–1950 ⓘ
buildPlace	Roanoke, Virginia ⓘ
buildStartDate	1936 ⓘ
configuration	simple articulated ⓘ
country	United States ⓘ linked to: United States of America
cylinderArrangement	two outside high-pressure cylinders and two inside low-pressure cylinders ⓘ
cylinderCount	4 ⓘ
designer	Norfolk and Western Railway Roanoke Shops ⓘ linked to: Roanoke Shops
disposition	most units scrapped ⓘ
driverDiameter	1,778 mm ⓘ 70 in ⓘ
enteredService	1936 ⓘ
era	mid-20th century ⓘ
fuelType	coal ⓘ
maximumSpeed	113 km/h ⓘ 70 mph ⓘ
notableFor	ability to haul heavy coal trains at high speed ⓘ high power-to-weight ratio ⓘ
notableUnit	Norfolk and Western 1218 ⓘ linked to: Norfolk and Western Class A
operator	Norfolk and Western Railway ⓘ
powerType	steam ⓘ
preservedAt	Virginia Museum of Transportation ⓘ
preservedLocation	Roanoke, Virginia ⓘ
preservedUnits	1 ⓘ
primaryRole	high-speed freight service ⓘ
railGauge	1,435 mm ⓘ 4 ft 8 1⁄2 in ⓘ
railwayCompany	Norfolk and Western Railway ⓘ
railwayRegion	Appalachian coal fields ⓘ linked to: Appalachian coalfield
relatedClass	Norfolk and Western Class J ⓘ Norfolk and Western Y class ⓘ
retirementEndDate	early 1960s ⓘ
retirementStartDate	late 1950s ⓘ
successorTractionType	diesel-electric locomotives ⓘ
totalProduced	43 ⓘ
tractiveEffort	114,000 lbf ⓘ 507 kN ⓘ
UICClassification	(1′C)(C1′) h4 ⓘ
usedFor	coal trains ⓘ manifest freight trains ⓘ
usedOn	Norfolk and Western mainline freight trains ⓘ
valveGear	Baker valve gear ⓘ
wheelArrangement	2-6-6-4 ⓘ

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

Norfolk and Western Railway → notableLocomotiveClass → Norfolk and Western Class A ⓘ

Norfolk and Western Railway → notableLocomotiveClass → Norfolk and Western Class Y ⓘ

linked to: Norfolk and Western Class A

Norfolk and Western Class A → notableUnit → Norfolk and Western 1218 ⓘ