Ankara Metro
E80644
Ankara Metro is the rapid transit system serving Turkey's capital city, providing urban rail transportation across Ankara and its surrounding districts.
All labels observed (14)
How this entity was disambiguated
This entity first appeared as the object of triple T645286 — 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: Ankara Metro Context triple: [Ankara, hasMetroSystem, Ankara Metro]
-
A.
Izmir Metro
Izmir Metro is a rapid transit rail system serving the city of Izmir, Turkey, providing high-capacity urban transportation across key districts.
-
B.
Tehran Metro
Tehran Metro is the rapid transit system serving Iran’s capital, providing extensive urban and suburban rail transport across the Tehran metropolitan area.
-
C.
Tram Izmir
Tram Izmir is a modern light rail tram network serving the Turkish city of İzmir as part of its urban public transportation system.
-
D.
Budapest Metro
The Budapest Metro is the rapid transit system serving Hungary’s capital, notable for including Line 1, one of the oldest electrified underground railway lines in continental Europe.
-
E.
Turin Metro
The Turin Metro is a fully automated, driverless rapid transit system serving the city of Turin, Italy.
- 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: Ankara Metro Target entity description: Ankara Metro is the rapid transit system serving Turkey's capital city, providing urban rail transportation across Ankara and its surrounding districts.
-
A.
Izmir Metro
Izmir Metro is a rapid transit rail system serving the city of Izmir, Turkey, providing high-capacity urban transportation across key districts.
-
B.
Tehran Metro
Tehran Metro is the rapid transit system serving Iran’s capital, providing extensive urban and suburban rail transport across the Tehran metropolitan area.
-
C.
Tram Izmir
Tram Izmir is a modern light rail tram network serving the Turkish city of İzmir as part of its urban public transportation system.
-
D.
Budapest Metro
The Budapest Metro is the rapid transit system serving Hungary’s capital, notable for including Line 1, one of the oldest electrified underground railway lines in continental Europe.
-
E.
Turin Metro
The Turin Metro is a fully automated, driverless rapid transit system serving the city of Turin, Italy.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
metro system
ⓘ
rapid transit system ⓘ |
| connectsWith |
Ankara commuter rail (Başkentray)
ⓘ
Ankaray ⓘ
linked to:
Ankara Metro
Esenboğa Airport bus services ⓘ |
| country | Turkey ⓘ |
| electrification | 750 V DC third rail ⓘ |
| fareCollection | automatic fare gates ⓘ |
| fareMedium | Ankarakart ⓘ |
| fareSystem | electronic smart card ⓘ |
| hasFeature |
CCTV surveillance
ⓘ
escalators and elevators at stations ⓘ park and ride facilities at some stations ⓘ passenger information displays ⓘ |
| hasLine |
M1 line
ⓘ
M2 line ⓘ M3 line ⓘ M4 line ⓘ |
| hasRollingStock | electric multiple units ⓘ |
| isAtGrade | partly ⓘ |
| isElevated | partly ⓘ |
| isPartOf | public transportation network of Ankara ⓘ |
| isUnderground | partly ⓘ |
| languageOfSignage |
English
ⓘ
Turkish ⓘ |
| locatedIn |
Ankara
ⓘ
Ankara Province ⓘ Central Anatolia Region ⓘ |
| numberOfLines | 4 ⓘ |
| numberOfStations | more than 40 ⓘ |
| openingDate | 1997 ⓘ |
| operator | EGO General Directorate ⓘ |
| owner | Ankara Metropolitan Municipality ⓘ |
| primaryFunction | urban mass transit ⓘ |
| safetySystem | automatic train protection ⓘ |
| serves | Ankara ⓘ |
| servesAs | public transport in Ankara ⓘ |
| servesDistrict |
Batıkent
ⓘ
Keçiören ⓘ Kızılay ⓘ Sincan ⓘ Çayyolu ⓘ |
| servesRole | reducing road traffic congestion in Ankara ⓘ |
| systemLength | approximately 65 km ⓘ |
| trackGauge | standard gauge ⓘ |
| transitType | urban 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: Ankara Metro Description of subject: Ankara Metro is the rapid transit system serving Turkey's capital city, providing urban rail transportation across Ankara and its surrounding districts.
Referenced by (50)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Ankara Metro
linked to: Ankara Metro
linked to: Ankara Metro
linked to: Ankara Metro
linked to: Ankara Metro
linked to: Ankara Metro
linked to: Ankara Metro
linked to: Ankara Metro
linked to: Ankara Metro
linked to: Ankara Metro
linked to: Ankara Metro
linked to: Ankara Metro
linked to: Ankara Metro
linked to: Ankara Metro
linked to: Ankara Metro
linked to: Ankara Metro