M19 line
E671914
The M19 line is a rapid transit route within the Istanbul Metro system serving commuters in Turkey’s largest city.
All labels observed (1)
| Label | Occurrences |
|---|---|
| M19 line canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7175663 — 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: M19 line Context triple: [Istanbul Metro, hasLine, M19 line]
-
A.
M17 line
The M17 line is a rapid transit route within the Istanbul Metro system serving passengers in Turkey’s largest city.
-
B.
M9 line
The M9 line is a rapid transit route within the Istanbul Metro system serving the city’s European side.
-
C.
M11 line
The M11 line is a rapid transit route of the Istanbul Metro system that connects the city center with Istanbul Airport and other northern districts.
-
D.
M29 line
The M29 line is a metro line within the Istanbul Metro rapid transit network in Istanbul, Turkey.
-
E.
M14 line
The M14 line is a metro line within the Istanbul Metro rapid transit network in Istanbul, Turkey.
- 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: M19 line Target entity description: The M19 line is a rapid transit route within the Istanbul Metro system serving commuters in Turkey’s largest city.
-
A.
M17 line
The M17 line is a rapid transit route within the Istanbul Metro system serving passengers in Turkey’s largest city.
-
B.
M9 line
The M9 line is a rapid transit route within the Istanbul Metro system serving the city’s European side.
-
C.
M11 line
The M11 line is a rapid transit route of the Istanbul Metro system that connects the city center with Istanbul Airport and other northern districts.
-
D.
M29 line
The M29 line is a metro line within the Istanbul Metro rapid transit network in Istanbul, Turkey.
-
E.
M14 line
The M14 line is a metro line within the Istanbul Metro rapid transit network in Istanbul, Turkey.
- F. None of above. chosen
Statements (28)
| Predicate | Object |
|---|---|
| instanceOf | rapid transit line ⓘ |
| category |
Istanbul Metro lines
ⓘ
linked to:
Istanbul Metro
Rail transport in Istanbul ⓘ |
| continent |
Asia
ⓘ
Europe ⓘ |
| country | Turkey ⓘ |
| electrification | electric railway ⓘ |
| fareSystem | Istanbul public transport fare system ⓘ |
| hasLanguageOfSignage |
English
ⓘ
Turkish ⓘ |
| hasServiceType | urban rail ⓘ |
| isInCity | Istanbul ⓘ |
| isPartOf | public transport in Istanbul ⓘ |
| locatedIn |
Istanbul
ⓘ
Turkey ⓘ |
| modeOfTransport | metro ⓘ |
| operator | Metro Istanbul ⓘ |
| owner | Istanbul Metropolitan Municipality ⓘ |
| partOf | Istanbul Metro ⓘ |
| primaryFunction | urban commuter transport ⓘ |
| publicTransportType | metro line ⓘ |
| railwaySignalling | automatic train control ⓘ |
| safetySystem | modern metro signalling ⓘ |
| serves | commuters in Istanbul ⓘ |
| systemType | rapid transit ⓘ |
| trackGauge | standard gauge ⓘ |
| transportNetwork |
Istanbul Metro system
ⓘ
linked to:
Istanbul Metro
|
| usesTicketingSystem | Istanbulkart ⓘ |
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: M19 line Description of subject: The M19 line is a rapid transit route within the Istanbul Metro system serving commuters in Turkey’s largest city.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.