GE P42DC (on non-electrified segments historically)
E127706
The GE P42DC is a diesel-electric passenger locomotive built by General Electric for Amtrak and other operators, widely used across North American intercity rail services.
All labels observed (2)
| Label | Occurrences |
|---|---|
| GE P42DC (non-electrified segments) | 1 |
| GE P42DC (on non-electrified segments historically) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1122010 — 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: GE P42DC (on non-electrified segments historically) Context triple: [Amtrak Northeast Regional, locomotiveUsed, GE P42DC (on non-electrified segments historically)]
-
A.
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.
-
B.
DE30AC locomotive
The DE30AC locomotive is a diesel-electric passenger locomotive built by EMD for the Long Island Rail Road, designed for push-pull commuter service with head-end power.
-
C.
PRR K4s
The PRR K4s was a class of iconic 4-6-2 "Pacific" steam locomotives that served as the primary passenger power for the Pennsylvania Railroad in the first half of the 20th century.
-
D.
Siemens ACS-64
The Siemens ACS-64 is a high-speed, electric locomotive used by Amtrak for passenger rail service in the United States.
-
E.
PA-3 railcars
The PA-3 railcars are a series of electric multiple-unit subway cars used on the PATCO Speedline rapid transit system serving the Philadelphia–Camden region.
- 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: GE P42DC (on non-electrified segments historically) Target entity description: The GE P42DC is a diesel-electric passenger locomotive built by General Electric for Amtrak and other operators, widely used across North American intercity rail services.
-
A.
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.
-
B.
DE30AC locomotive
The DE30AC locomotive is a diesel-electric passenger locomotive built by EMD for the Long Island Rail Road, designed for push-pull commuter service with head-end power.
-
C.
PRR K4s
The PRR K4s was a class of iconic 4-6-2 "Pacific" steam locomotives that served as the primary passenger power for the Pennsylvania Railroad in the first half of the 20th century.
-
D.
Siemens ACS-64
The Siemens ACS-64 is a high-speed, electric locomotive used by Amtrak for passenger rail service in the United States.
-
E.
PA-3 railcars
The PA-3 railcars are a series of electric multiple-unit subway cars used on the PATCO Speedline rapid transit system serving the Philadelphia–Camden region.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf | diesel-electric passenger locomotive ⓘ |
| builderModelFamily | Genesis ⓘ |
| countryOfOperation |
Canada
ⓘ
United States ⓘ
linked to:
United States of America
|
| designedFor |
North American loading gauge
ⓘ
North American passenger rolling stock ⓘ high-speed passenger service relative to conventional diesel locomotives ⓘ |
| followedBy | Siemens Charger ⓘ |
| hasBodyStyle | full-width cowl body ⓘ |
| hasCabConfiguration | single cab ⓘ |
| hasControlSystem | microprocessor-based control ⓘ |
| hasCoupling | AAR knuckle coupler ⓘ |
| hasFuelType | diesel fuel ⓘ |
| hasHeadEndPower | yes ⓘ |
| hasNickname |
Amtrak Genesis
ⓘ
Genesis P42 ⓘ |
| hasOperatorRole | road locomotive ⓘ |
| hasPrimeMover |
GE FDL-series diesel engine
ⓘ
linked to:
GE 7FDL16
|
| hasSafetyFeature | crash energy management elements (relative to earlier designs) ⓘ |
| hasTransmission | electric ⓘ |
| introducedBy | Amtrak ⓘ |
| introducedInDecade | 1990s ⓘ |
| manufacturer | General Electric ⓘ |
| operator |
Amtrak
ⓘ
MARC Train (historically via lease or testing in some contexts) ⓘ
linked to:
MARC Train
Vermont Railway ⓘ Via Rail Canada ⓘ
linked to:
Via Rail
|
| partOfSeries | GE Genesis series ⓘ |
| powerType | diesel-electric ⓘ |
| precededBy | GE P40DC ⓘ |
| primaryUse | intercity passenger service ⓘ |
| railwayVehicleType | mainline passenger locomotive ⓘ |
| trackGauge | standard gauge ⓘ |
| usedBy |
federally supported Amtrak routes
ⓘ
state-supported Amtrak routes ⓘ |
| usedFor |
push-pull operation
ⓘ
single-ended locomotive-hauled trains ⓘ supplying head-end power to passenger cars ⓘ |
| usedOn |
Amtrak corridor services
ⓘ
Amtrak long-distance trains ⓘ
linked to:
Amtrak long-distance routes
Amtrak’s eastern long-distance routes ⓘ Amtrak’s national network ⓘ Amtrak’s western long-distance routes ⓘ Via Rail intercity services ⓘ
linked to:
Via Rail
cross-border services between the United States and Canada ⓘ non-electrified mainline routes ⓘ non-electrified segments historically where electric locomotives could not operate ⓘ non-electrified segments of the Northeast Corridor (historically and on branches) ⓘ |
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: GE P42DC (on non-electrified segments historically) Description of subject: The GE P42DC is a diesel-electric passenger locomotive built by General Electric for Amtrak and other operators, widely used across North American intercity rail services.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: GE P42DC (on non-electrified segments historically)