EMD GP40
E883596
The EMD GP40 is a four-axle diesel-electric locomotive built by Electro-Motive Division in the late 1960s and early 1970s, widely used by North American railroads for freight service.
All labels observed (2)
| Label | Occurrences |
|---|---|
| EMD GP40 canonical | 2 |
| EMD GP40TC | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10735185 — 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: EMD GP40 Context triple: [GP40PH-2, derivedFrom, EMD GP40]
-
A.
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.
-
B.
EMD GP38-2
The EMD GP38-2 is a widely used four-axle diesel-electric road switcher locomotive built by General Motors’ Electro-Motive Division, known for its reliability and versatility in freight service across North America.
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C.
EMD F40PH
The EMD F40PH is a widely used four-axle diesel-electric passenger locomotive built by Electro-Motive Division, best known for its long service on North American commuter and intercity railroads.
-
D.
EMD GP7 locomotive
The EMD GP7 locomotive is a widely used four-axle diesel-electric road switcher introduced in the late 1940s that helped usher in the transition from steam to diesel power on North American railroads.
-
E.
EMD GP9 locomotive
The EMD GP9 locomotive is a widely used four-axle diesel-electric road switcher built in the 1950s that became one of North America's most successful and versatile freight and passenger locomotives.
- 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: EMD GP40 Target entity description: The EMD GP40 is a four-axle diesel-electric locomotive built by Electro-Motive Division in the late 1960s and early 1970s, widely used by North American railroads for freight service.
-
A.
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.
-
B.
EMD GP38-2
The EMD GP38-2 is a widely used four-axle diesel-electric road switcher locomotive built by General Motors’ Electro-Motive Division, known for its reliability and versatility in freight service across North America.
-
C.
EMD F40PH
The EMD F40PH is a widely used four-axle diesel-electric passenger locomotive built by Electro-Motive Division, best known for its long service on North American commuter and intercity railroads.
-
D.
EMD GP7 locomotive
The EMD GP7 locomotive is a widely used four-axle diesel-electric road switcher introduced in the late 1940s that helped usher in the transition from steam to diesel power on North American railroads.
-
E.
EMD GP9 locomotive
The EMD GP9 locomotive is a widely used four-axle diesel-electric road switcher built in the 1950s that became one of North America's most successful and versatile freight and passenger locomotives.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf | diesel-electric locomotive ⓘ |
| aspiration | turbocharged ⓘ |
| axleConfiguration | four-axle ⓘ |
| brakeType | air ⓘ |
| buildDateEnd | 1971 ⓘ |
| buildDateStart | 1965 ⓘ |
| builderModelSeries | EMD GP series NERFINISHED ⓘ |
| controlType | multiple-unit capable ⓘ |
| cylinderCount | 16 ⓘ |
| designedFor | freight service ⓘ |
| engineType | two-stroke diesel ⓘ |
| gauge | standard gauge ⓘ |
| introducedAs | successor to EMD GP35 ⓘ |
| length | about 59 feet ⓘ |
| manufacturer |
Electro-Motive Division
NERFINISHED
ⓘ
General Motors Electro-Motive Division NERFINISHED ⓘ |
| marketedFor | mainline freight ⓘ |
| powerOutput | 3000 hp ⓘ |
| powerType | diesel-electric ⓘ |
| primaryRegionOfUse | North America NERFINISHED ⓘ |
| primeMover | EMD 645E3 NERFINISHED ⓘ |
| successorModel | EMD GP40-2 NERFINISHED ⓘ |
| totalProduced | over 1200 units ⓘ |
| usedBy |
Atchison, Topeka and Santa Fe Railway
NERFINISHED
ⓘ
Baltimore and Ohio Railroad NERFINISHED ⓘ Bangor and Aroostook Railroad NERFINISHED ⓘ Boston and Maine Railroad NERFINISHED ⓘ Burlington Northern Railroad NERFINISHED ⓘ Canadian National Railway NERFINISHED ⓘ Canadian Pacific Railway NERFINISHED ⓘ Central Vermont Railway NERFINISHED ⓘ Chesapeake and Ohio Railway NERFINISHED ⓘ Conrail NERFINISHED ⓘ Denver and Rio Grande Western Railroad NERFINISHED ⓘ Detroit, Toledo and Ironton Railroad NERFINISHED ⓘ Grand Trunk Western Railroad NERFINISHED ⓘ Illinois Central Railroad NERFINISHED ⓘ MKT Railroad NERFINISHED ⓘ Maine Central Railroad NERFINISHED ⓘ Missouri Pacific Railroad NERFINISHED ⓘ New York, New Haven and Hartford Railroad NERFINISHED ⓘ Norfolk and Western Railway NERFINISHED ⓘ Penn Central Transportation Company NERFINISHED ⓘ Providence and Worcester Railroad NERFINISHED ⓘ Reading Company NERFINISHED ⓘ Rock Island Railroad NERFINISHED ⓘ Seaboard Coast Line Railroad NERFINISHED ⓘ Southern Railway (U.S.) NERFINISHED ⓘ Union Pacific Railroad NERFINISHED ⓘ |
| wheelArrangement | B-B ⓘ |
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: EMD GP40 Description of subject: The EMD GP40 is a four-axle diesel-electric locomotive built by Electro-Motive Division in the late 1960s and early 1970s, widely used by North American railroads for freight service.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
EMD GP40TC