WMATA 3000-series railcar
E127414
The WMATA 3000-series railcar is a generation of Washington Metro rapid transit vehicles used across multiple lines in the system, featuring stainless-steel construction and updated interiors compared to earlier series.
All labels observed (4)
| Label | Occurrences |
|---|---|
| WMATA 3000-series railcar canonical | 2 |
| WMATA 3000-series railcars | 2 |
| 3000-series Washington Metro railcar | 1 |
| WMATA railcar fleet | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1091372 — 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: WMATA 3000-series railcar Context triple: [Washington Metro Yellow Line, rollingStock, WMATA 3000-series railcar]
-
A.
WMATA 2000-series railcar
The WMATA 2000-series railcar is a generation of Washington Metro rapid transit vehicles used across the system’s lines, featuring stainless-steel construction and updated interiors compared to earlier fleets.
-
B.
MBTA Type 9 Light Rail Vehicle
The MBTA Type 9 Light Rail Vehicle is a modern, low-floor streetcar used on Boston’s Green Line that features improved accessibility, passenger comfort, and energy efficiency compared to earlier MBTA light rail fleets.
-
C.
MBTA Type 7 Light Rail Vehicle
The MBTA Type 7 Light Rail Vehicle is a high-floor, articulated streetcar used on Boston’s Green Line, known for its distinctive design and role as one of the system’s primary light rail fleets.
-
D.
MBTA Type 8 Light Rail Vehicle
The MBTA Type 8 Light Rail Vehicle is a low-floor, articulated streetcar used on Boston’s Green Line, designed to improve accessibility and passenger capacity on the system’s light rail routes.
-
E.
SEPTA Silverliner IV
The SEPTA Silverliner IV is an electric multiple-unit commuter railcar used extensively across Philadelphia's regional 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: WMATA 3000-series railcar Target entity description: The WMATA 3000-series railcar is a generation of Washington Metro rapid transit vehicles used across multiple lines in the system, featuring stainless-steel construction and updated interiors compared to earlier series.
-
A.
WMATA 2000-series railcar
The WMATA 2000-series railcar is a generation of Washington Metro rapid transit vehicles used across the system’s lines, featuring stainless-steel construction and updated interiors compared to earlier fleets.
-
B.
MBTA Type 9 Light Rail Vehicle
The MBTA Type 9 Light Rail Vehicle is a modern, low-floor streetcar used on Boston’s Green Line that features improved accessibility, passenger comfort, and energy efficiency compared to earlier MBTA light rail fleets.
-
C.
MBTA Type 7 Light Rail Vehicle
The MBTA Type 7 Light Rail Vehicle is a high-floor, articulated streetcar used on Boston’s Green Line, known for its distinctive design and role as one of the system’s primary light rail fleets.
-
D.
MBTA Type 8 Light Rail Vehicle
The MBTA Type 8 Light Rail Vehicle is a low-floor, articulated streetcar used on Boston’s Green Line, designed to improve accessibility and passenger capacity on the system’s light rail routes.
-
E.
SEPTA Silverliner IV
The SEPTA Silverliner IV is an electric multiple-unit commuter railcar used extensively across Philadelphia's regional rail network.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
electric multiple unit
ⓘ
rapid transit railcar ⓘ |
| belongsToFleet |
WMATA 3000-series railcar
self-linksurface differs
ⓘ
surface form:
WMATA railcar fleet
|
| compatibleWith | WMATA automatic train control system ⓘ |
| constructionMaterial | stainless steel ⓘ |
| designedFor | rapid transit service ⓘ |
| designedForOperation | multiple-unit trainsets ⓘ |
| designedForSpeedRange | urban rapid transit operating speeds ⓘ |
| designedForVoltage | 750 V DC third rail ⓘ |
| doorType | side doors for passenger boarding ⓘ |
| floorHeight | level with station platforms ⓘ |
| gauge | standard gauge ⓘ |
| hasAccessibilityFeature |
priority seating areas
ⓘ
visual and audible station announcements ⓘ |
| hasBogieConfiguration | two-axle bogies ⓘ |
| hasBrakingSystem | electric and pneumatic brakes ⓘ |
| hasCommunicationSystem |
operator cab radios
ⓘ
public address system ⓘ |
| hasCoupling | multiple-unit control compatible with other WMATA series ⓘ |
| hasEndDoors | cab-end emergency doors ⓘ |
| hasFeature |
high-platform boarding
ⓘ
updated interiors compared to earlier WMATA series ⓘ |
| hasHVAC | air conditioning ⓘ |
| hasInterior | longitudinal and transverse seating mix ⓘ |
| hasLighting | interior fluorescent or LED lighting ⓘ |
| hasSafetySystem | automatic train protection compatible ⓘ |
| network |
Washington Metro
ⓘ
surface form:
Washington Metro rail network
|
| operator | Washington Metropolitan Area Transit Authority ⓘ |
| platformCompatibility | high-level platforms only ⓘ |
| powerCollectionMethod | third rail ⓘ |
| servesSystem | Washington Metro ⓘ |
| serviceType | passenger service ⓘ |
| trackConfiguration | dual track compatible ⓘ |
| traction | electric traction ⓘ |
| usedInCountry |
United States of America
ⓘ
surface form:
United States
|
| usedInRegion |
Washington metropolitan area
ⓘ
surface form:
Washington, D.C. metropolitan area
|
| usedOnLine |
Blue Line (Washington Metro)
ⓘ
Washington Metro Green Line ⓘ
surface form:
Green Line (Washington Metro)
Orange Line (Washington Metro) ⓘ Washington Metro Red Line ⓘ
surface form:
Red Line (Washington Metro)
Silver Line ⓘ
surface form:
Silver Line (Washington Metro)
Washington Metro Yellow Line ⓘ
surface form:
Yellow Line (Washington Metro)
|
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: WMATA 3000-series railcar Description of subject: The WMATA 3000-series railcar is a generation of Washington Metro rapid transit vehicles used across multiple lines in the system, featuring stainless-steel construction and updated interiors compared to earlier series.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
3000-series Washington Metro railcar
subject surface form:
Red Line (Washington Metro)
this entity surface form:
WMATA 3000-series railcars
this entity surface form:
WMATA 3000-series railcars
this entity surface form:
WMATA railcar fleet