EMD F40PH
E419690
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.
All labels observed (6)
| Label | Occurrences |
|---|---|
| EMD F40PH canonical | 3 |
| EMD F40PH locomotives | 2 |
| EMD F40PH-2C | 2 |
| EMD F40PH-2 | 1 |
| EMD F40PH-3C | 1 |
| EMD F40PHM-2 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4178933 — 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 F40PH Context triple: [MBTA diesel locomotives, hasModel, EMD F40PH]
-
A.
EMD F59PHI
The EMD F59PHI is a streamlined diesel-electric passenger locomotive widely used in North American intercity and commuter rail services.
-
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.
EMD F125
The EMD F125 is a modern diesel-electric passenger locomotive built by Electro-Motive Diesel for commuter rail service, featuring improved emissions performance, higher power output, and updated safety and control systems compared to its predecessors.
-
D.
GG1 electric locomotive
The GG1 electric locomotive was a streamlined, high-speed electric locomotive class that became an iconic workhorse of American railroading, particularly in the Northeast corridor, during much of the 20th century.
-
E.
Amtrak General Electric Genesis locomotives
Amtrak General Electric Genesis locomotives are a series of diesel-electric passenger locomotives built by GE for Amtrak, widely used across its intercity routes in the United States.
- 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 F40PH Target entity description: 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.
-
A.
EMD F59PHI
The EMD F59PHI is a streamlined diesel-electric passenger locomotive widely used in North American intercity and commuter rail services.
-
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.
EMD F125
The EMD F125 is a modern diesel-electric passenger locomotive built by Electro-Motive Diesel for commuter rail service, featuring improved emissions performance, higher power output, and updated safety and control systems compared to its predecessors.
-
D.
GG1 electric locomotive
The GG1 electric locomotive was a streamlined, high-speed electric locomotive class that became an iconic workhorse of American railroading, particularly in the Northeast corridor, during much of the 20th century.
-
E.
Amtrak General Electric Genesis locomotives
Amtrak General Electric Genesis locomotives are a series of diesel-electric passenger locomotives built by GE for Amtrak, widely used across its intercity routes in the United States.
- F. None of above. chosen
Statements (59)
| Predicate | Object |
|---|---|
| instanceOf |
diesel-electric locomotive
ⓘ
locomotive class ⓘ passenger locomotive ⓘ |
| axleCount | 4 ⓘ |
| brakeType | air brakes ⓘ |
| buildDateEnd | 1992 ⓘ |
| buildDateStart | 1975 ⓘ |
| countryOfOperation |
Canada
ⓘ
United States ⓘ
linked to:
United States of America
|
| cylinderCount | 16 ⓘ |
| designFeature |
full-width cowl carbody
ⓘ
non-turbocharged 645-series prime mover ⓘ |
| dynamicBrakes | yes ⓘ |
| engineType | two-stroke diesel ⓘ |
| family |
EMD F-series locomotives
ⓘ
linked to:
EMD F-series
|
| fuelType | diesel fuel ⓘ |
| gauge | standard gauge ⓘ |
| headEndPowerFrequency | 60 Hz ⓘ |
| headEndPowerVoltage | 480 V AC ⓘ |
| introduced | 1975 ⓘ |
| laterPowerOutputVariant | 3200 hp ⓘ |
| laterUse | cabbage car conversions by Amtrak ⓘ |
| length | approximately 56 ft ⓘ |
| manufacturer |
Electro-Motive Division
ⓘ
General Motors Electro-Motive Division ⓘ
linked to:
Electro-Motive Division
|
| notableFor |
iconic Amtrak locomotive of late 20th century
ⓘ
widespread use in North American passenger service ⓘ |
| notableOperator |
Amtrak long-distance trains
ⓘ
linked to:
Amtrak long-distance routes
|
| operator |
Amtrak
ⓘ
Caltrain ⓘ Coaster (San Diego) ⓘ GO Transit ⓘ MBTA Commuter Rail ⓘ
linked to:
MBTA Commuter Rail network
Metra ⓘ Sounder commuter rail ⓘ Tri-Rail ⓘ Via Rail Canada ⓘ
linked to:
Via Rail
|
| powerOutput | 3000 hp ⓘ |
| powerType | diesel-electric ⓘ |
| primaryUse |
commuter rail service
ⓘ
intercity rail service ⓘ passenger service ⓘ |
| primeMover |
EMD 16-645E3
ⓘ
linked to:
EMD 645-series diesel engine
|
| serviceEntry | mid-1970s ⓘ |
| successor |
EMD F59PH
ⓘ
linked to:
EMD F59PH locomotive
GE Genesis ⓘ
linked to:
GE Genesis series
|
| topSpeed | 79 mph ⓘ |
| topSpeedVariant | 90 mph ⓘ |
| totalProduced | over 400 units ⓘ |
| trackGauge | 1435 mm ⓘ |
| tractionMotors | DC traction motors ⓘ |
| trainHeating | head-end power ⓘ |
| transmission | electric ⓘ |
| UICClassification | Bo′Bo′ ⓘ |
| variant |
EMD F40PH-2
ⓘ
linked to:
EMD F40PH
EMD F40PH-2C ⓘ
linked to:
EMD F40PH
EMD F40PHM-2 ⓘ
linked to:
EMD F40PH
EMD F40PHR 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 F40PH Description of subject: 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.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: EMD F40PH
linked to: EMD F40PH
linked to: EMD F40PH
linked to: EMD F40PH