PS-1 boxcar
E523141
The PS-1 boxcar is a widely used, standardized freight railcar model introduced in the mid-20th century that became a benchmark for modern boxcar design in North American railroading.
All labels observed (1)
| Label | Occurrences |
|---|---|
| PS-1 boxcar canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5481914 — 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: PS-1 boxcar Context triple: [Pullman-Standard, designed, PS-1 boxcar]
-
A.
PA5 railcar
The PA5 railcar is a modern electric multiple unit train used on the PATH rapid transit system serving New York and New Jersey.
-
B.
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.
-
C.
PA-1 railcars
The PA-1 railcars are an early generation of electric multiple-unit subway cars built for and operated on the PATCO Speedline rapid transit system serving the Philadelphia–South Jersey region.
-
D.
PA-2 railcars
The PA-2 railcars are a generation of electric multiple-unit subway cars built for and operated on the PATCO Speedline rapid transit system serving the Philadelphia–South Jersey region.
-
E.
Union Pacific inspection cars
Union Pacific inspection cars are specially outfitted railroad cars used by the Union Pacific Railroad to carry officials and inspectors for track, infrastructure, and operational evaluations along the rail network.
- 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: PS-1 boxcar Target entity description: The PS-1 boxcar is a widely used, standardized freight railcar model introduced in the mid-20th century that became a benchmark for modern boxcar design in North American railroading.
-
A.
PA5 railcar
The PA5 railcar is a modern electric multiple unit train used on the PATH rapid transit system serving New York and New Jersey.
-
B.
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.
-
C.
PA-1 railcars
The PA-1 railcars are an early generation of electric multiple-unit subway cars built for and operated on the PATCO Speedline rapid transit system serving the Philadelphia–South Jersey region.
-
D.
PA-2 railcars
The PA-2 railcars are a generation of electric multiple-unit subway cars built for and operated on the PATCO Speedline rapid transit system serving the Philadelphia–South Jersey region.
-
E.
Union Pacific inspection cars
Union Pacific inspection cars are specially outfitted railroad cars used by the Union Pacific Railroad to carry officials and inspectors for track, infrastructure, and operational evaluations along the rail network.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
freight boxcar
ⓘ
railway rolling stock ⓘ standardized boxcar design ⓘ |
| hasBrakeType | air brake equipped ⓘ |
| hasCouplerType | Janney (AAR) knuckle couplers ⓘ |
| hasDesignFeature |
all-steel construction
ⓘ
enclosed roofed body ⓘ end-of-car cushioning options ⓘ sliding side doors ⓘ standardized dimensions ⓘ welded or riveted steel sides ⓘ |
| hasDesignRole | benchmark for modern boxcar design ⓘ |
| hasDoorConfiguration |
double sliding doors
ⓘ
single sliding door ⓘ |
| hasEndConstruction | steel ends ⓘ |
| hasGauge | standard gauge ⓘ |
| hasHistoricalSignificance | standard for postwar boxcar fleets in North America ⓘ |
| hasInfluenceOn | later standard boxcar designs ⓘ |
| hasLoadingType |
end loading (via doors)
ⓘ
side loading ⓘ |
| hasReputation |
iconic mid-century North American boxcar
ⓘ
widely used freight car type ⓘ |
| hasRoofType | steel roof ⓘ |
| hasRunningGear | two-axle trucks ⓘ |
| hasServiceRole |
interchange service
ⓘ
local freight service ⓘ road freight service ⓘ |
| hasSideConstruction | steel sides ⓘ |
| hasTypicalCapacity |
approximately 50-ton
ⓘ
approximately 70-ton ⓘ |
| hasTypicalLength |
40-foot
ⓘ
50-foot ⓘ |
| introducedInDecade | 1940s ⓘ |
| introducedInPeriod | mid-20th century ⓘ |
| operatedOn |
Class I railroads in North America
ⓘ
regional railroads in North America ⓘ short line railroads in North America ⓘ |
| usedBy |
multiple North American railroads
ⓘ
private car owners and shippers ⓘ |
| usedFor |
general merchandise freight
ⓘ
manufactured goods ⓘ packaged goods ⓘ paper products ⓘ |
| usedInCountry |
Canada
ⓘ
Mexico ⓘ United States of America ⓘ
surface form:
United States
|
| usedInIndustry | rail freight transportation ⓘ |
| usedInRegion | North America NERFINISHED ⓘ |
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: PS-1 boxcar Description of subject: The PS-1 boxcar is a widely used, standardized freight railcar model introduced in the mid-20th century that became a benchmark for modern boxcar design in North American railroading.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.