MARTA heavy rail cars
E495099
MARTA heavy rail cars are electric multiple-unit subway trains used to provide rapid transit service on Atlanta’s Metropolitan Atlanta Rapid Transit Authority rail system.
All labels observed (2)
| Label | Occurrences |
|---|---|
| MARTA heavy rail cars canonical | 1 |
| MARTA heavy rail vehicles | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5119719 — 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: MARTA heavy rail cars Context triple: [Red Line (MARTA), rollingStock, MARTA heavy rail cars]
-
A.
MARTA Streetcar
MARTA Streetcar is a modern streetcar transit service operating in Atlanta, Georgia, providing local rail connections through key downtown and nearby neighborhoods.
-
B.
O-Train
The O-Train is Ottawa’s urban rail transit system, providing light rail service across key corridors of Canada’s capital city.
-
C.
MARTA Bus
MARTA Bus is the public bus transit system serving the Atlanta metropolitan area as part of the region’s primary mass transit network.
-
D.
R143 subway cars
The R143 subway cars are a class of New York City Subway rolling stock built in the early 2000s, primarily used on the BMT Canarsie Line and known for introducing modern features like electronic signage and automated announcements.
-
E.
CTA 2200-series railcars
The CTA 2200-series railcars were a fleet of Chicago 'L' rapid transit cars built in the late 1960s, notable for their fluted stainless-steel sides and “blinker” door configuration, which served the system for several decades before retirement.
- 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: MARTA heavy rail cars Target entity description: MARTA heavy rail cars are electric multiple-unit subway trains used to provide rapid transit service on Atlanta’s Metropolitan Atlanta Rapid Transit Authority rail system.
-
A.
MARTA Streetcar
MARTA Streetcar is a modern streetcar transit service operating in Atlanta, Georgia, providing local rail connections through key downtown and nearby neighborhoods.
-
B.
O-Train
The O-Train is Ottawa’s urban rail transit system, providing light rail service across key corridors of Canada’s capital city.
-
C.
MARTA Bus
MARTA Bus is the public bus transit system serving the Atlanta metropolitan area as part of the region’s primary mass transit network.
-
D.
R143 subway cars
The R143 subway cars are a class of New York City Subway rolling stock built in the early 2000s, primarily used on the BMT Canarsie Line and known for introducing modern features like electronic signage and automated announcements.
-
E.
CTA 2200-series railcars
The CTA 2200-series railcars were a fleet of Chicago 'L' rapid transit cars built in the late 1960s, notable for their fluted stainless-steel sides and “blinker” door configuration, which served the system for several decades before retirement.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
electric multiple unit
ⓘ
rapid transit rolling stock ⓘ |
| belongsToTransitMode |
heavy rail
ⓘ
metro ⓘ |
| brakeType | electro-pneumatic brakes ⓘ |
| canFormTrainOf | multiple married pairs ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| designedFor |
grade-separated operation
ⓘ
high-frequency service ⓘ high-platform boarding ⓘ |
| doorType | sliding side doors ⓘ |
| electrificationSystem | 750 V DC third rail ⓘ |
| fareCollection | proof-of-payment via station faregates ⓘ |
| hasAccessibilityFeature |
audio announcements
ⓘ
visual destination signs ⓘ wheelchair spaces ⓘ |
| hasCarConfiguration |
married pairs
ⓘ
permanently coupled pairs ⓘ |
| hasCouplingType | automatic couplers ⓘ |
| hasInteriorFeature |
longitudinal seating
ⓘ
overhead handrails ⓘ priority seating ⓘ |
| hasLivery | MARTA color scheme ⓘ |
| hasOperatingEnvironment | automatic block signaling ⓘ |
| hasPowerCollection | contact shoes ⓘ |
| hasPropulsion | electric traction motors ⓘ |
| hasSafetySystem |
automatic train control
ⓘ
automatic train protection ⓘ |
| operatesIn |
at-grade railway sections
ⓘ
elevated railway sections ⓘ subway tunnels ⓘ |
| operatesOn | MARTA rail system NERFINISHED ⓘ |
| operator | Metropolitan Atlanta Rapid Transit Authority NERFINISHED ⓘ |
| partOf | MARTA rolling stock ⓘ |
| poweredBy | electricity ⓘ |
| railwaySystemType | rapid transit ⓘ |
| servesStationType |
elevated stations
ⓘ
surface stations ⓘ underground stations ⓘ |
| serviceArea | Atlanta metropolitan area NERFINISHED ⓘ |
| trackGauge | standard gauge ⓘ |
| tractionType | electric traction ⓘ |
| usedFor |
passenger transport
ⓘ
urban mass transit ⓘ |
| usedOn |
MARTA Blue Line
NERFINISHED
ⓘ
MARTA Gold Line NERFINISHED ⓘ MARTA Green Line NERFINISHED ⓘ MARTA Red Line NERFINISHED ⓘ |
| usesCurrentCollectionMethod | third rail ⓘ |
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: MARTA heavy rail cars Description of subject: MARTA heavy rail cars are electric multiple-unit subway trains used to provide rapid transit service on Atlanta’s Metropolitan Atlanta Rapid Transit Authority rail system.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Red Line (MARTA)
subject surface form:
Green Line (MARTA)
this entity surface form:
MARTA heavy rail vehicles