TRTA
E583760
TRTA (Teito Rapid Transit Authority) was the former public corporation responsible for operating most of Tokyo’s subway network before its privatization into Tokyo Metro.
All labels observed (1)
| Label | Occurrences |
|---|---|
| TRTA canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6312733 — 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: TRTA Context triple: [Tokyo Metro 8000 series, operatorPredecessor, TRTA]
-
A.
RTRA
RTRA is the abbreviation for the Royal Tank Regiment Association, an organization that supports and connects current and former members of the Royal Tank Regiment.
-
B.
RTA
RTA is Dubai’s Roads and Transport Authority, the government agency responsible for planning and operating the emirate’s public transportation and road systems.
-
C.
RTA
RTA is the common abbreviation for the Regional Transportation Authority of Northeastern Illinois, the agency that oversees public transit services in the Chicago metropolitan area.
-
D.
TRTS
TRTS is the commonly used abbreviation for the Taipei Metro rapid transit system serving the Taipei metropolitan area in Taiwan.
-
E.
RTR
RTR is a Swiss public broadcasting division that produces and distributes radio, television, and online content in the Romansh language.
- 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: TRTA Target entity description: TRTA (Teito Rapid Transit Authority) was the former public corporation responsible for operating most of Tokyo’s subway network before its privatization into Tokyo Metro.
-
A.
RTRA
RTRA is the abbreviation for the Royal Tank Regiment Association, an organization that supports and connects current and former members of the Royal Tank Regiment.
-
B.
RTA
RTA is Dubai’s Roads and Transport Authority, the government agency responsible for planning and operating the emirate’s public transportation and road systems.
-
C.
RTA
RTA is the common abbreviation for the Regional Transportation Authority of Northeastern Illinois, the agency that oversees public transit services in the Chicago metropolitan area.
-
D.
TRTS
TRTS is the commonly used abbreviation for the Taipei Metro rapid transit system serving the Taipei metropolitan area in Taiwan.
-
E.
RTR
RTR is a Swiss public broadcasting division that produces and distributes radio, television, and online content in the Romansh language.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
public corporation
ⓘ
railway operator ⓘ subway operator ⓘ |
| abbreviation | TRTA ⓘ |
| country | Japan ⓘ |
| fullName | Teito Rapid Transit Authority NERFINISHED ⓘ |
| hadLegalForm | public corporation ⓘ |
| headquartersLocation | Tokyo ⓘ |
| industry |
public transportation
ⓘ
rail transport ⓘ |
| languageOfName | Japanese ⓘ |
| locatedInMetropolitanArea | Greater Tokyo Area NERFINISHED ⓘ |
| nativeName | 帝都高速度交通営団 NERFINISHED ⓘ |
| operatedBrand | Eidan Subway NERFINISHED ⓘ |
| operatedBy | Teito Rapid Transit Authority NERFINISHED ⓘ |
| operatedFor |
commuter transport
ⓘ
urban mobility ⓘ |
| operatedFreightServices | no ⓘ |
| operatedInCity | Tokyo NERFINISHED ⓘ |
| operatedInCountry | Japan NERFINISHED ⓘ |
| operatedInfrastructure |
subway lines
ⓘ
subway stations ⓘ |
| operatedInPrefecture | Tokyo Prefecture NERFINISHED ⓘ |
| operatedMode |
railway
ⓘ
subway ⓘ |
| operatedMostOf | Tokyo subway network NERFINISHED ⓘ |
| operatedNetworkType | subway network ⓘ |
| operatedPassengerServices | yes ⓘ |
| operatedServiceArea | central Tokyo NERFINISHED ⓘ |
| organizationType | government-related corporation ⓘ |
| ownership | public sector ⓘ |
| primaryRole | operation of Tokyo subway lines ⓘ |
| privatizedInto | Tokyo Metro NERFINISHED ⓘ |
| regionServed |
Kantō region
NERFINISHED
ⓘ
Tokyo Metropolis NERFINISHED ⓘ |
| replacedBy | Tokyo Metro NERFINISHED ⓘ |
| serviceType |
rapid transit
ⓘ
urban rail transit ⓘ |
| shortName | Eidan NERFINISHED ⓘ |
| successor | Tokyo Metro NERFINISHED ⓘ |
| transportSector |
mass transit
ⓘ
urban public transport ⓘ |
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: TRTA Description of subject: TRTA (Teito Rapid Transit Authority) was the former public corporation responsible for operating most of Tokyo’s subway network before its privatization into Tokyo Metro.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.