M9 line
E660702
The M9 line is a rapid transit route within the Istanbul Metro system serving the city’s European side.
All labels observed (1)
| Label | Occurrences |
|---|---|
| M9 line canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7175654 — 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: M9 line Context triple: [Istanbul Metro, hasLine, M9 line]
-
A.
M8 line
The M8 line is a rapid transit route within the Istanbul Metro system that serves as one of the city’s key urban rail corridors.
-
B.
M7 line
The M7 line is a fully automated rapid transit route in the Istanbul Metro system that serves the city’s European side.
-
C.
M4 line
The M4 line is a rapid transit route within the Ankara Metro system serving passengers in Turkey’s capital city.
-
D.
M4 line
The M4 line is a rapid transit route of the Istanbul Metro system serving the city’s Asian side.
-
E.
M6 line
The M6 line is a short light metro route in Istanbul that connects the Levent area to the Boğaziçi University–Hisarüstü district on the European side of the city.
- 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: M9 line Target entity description: The M9 line is a rapid transit route within the Istanbul Metro system serving the city’s European side.
-
A.
M8 line
The M8 line is a rapid transit route within the Istanbul Metro system that serves as one of the city’s key urban rail corridors.
-
B.
M7 line
The M7 line is a fully automated rapid transit route in the Istanbul Metro system that serves the city’s European side.
-
C.
M4 line
The M4 line is a rapid transit route of the Istanbul Metro system serving the city’s Asian side.
-
D.
M4 line
The M4 line is a rapid transit route within the Ankara Metro system serving passengers in Turkey’s capital city.
-
E.
M6 line
The M6 line is a short light metro route in Istanbul that connects the Levent area to the Boğaziçi University–Hisarüstü district on the European side of the city.
- F. None of above. chosen
Statements (28)
| Predicate | Object |
|---|---|
| instanceOf | rapid transit line ⓘ |
| city | Istanbul ⓘ |
| country | Turkey ⓘ |
| fareSystem | Istanbulkart ⓘ |
| gauge | standard gauge ⓘ |
| hasAccessibility | wheelchair-accessible stations ⓘ |
| hasColor | designated line color on Istanbul Metro maps ⓘ |
| hasElectrification | 750 V DC third rail ⓘ |
| hasFeature |
CCTV surveillance
ⓘ
electronic passenger information displays ⓘ platform screen doors at some stations ⓘ |
| hasLanguageOfSignage |
English
ⓘ
Turkish ⓘ |
| hasPlatformType |
island platforms
ⓘ
side platforms ⓘ |
| hasRollingStock | electric multiple units ⓘ |
| isUnderground | true ⓘ |
| locatedIn |
Istanbul
ⓘ
Turkey ⓘ |
| operator | Metro Istanbul ⓘ |
| owner | Istanbul Metropolitan Municipality ⓘ |
| partOf | Istanbul Metro ⓘ |
| publicTransportNetwork |
Istanbul urban rail network
ⓘ
linked to:
Istanbul public transport network
|
| safetySystem | automatic train protection ⓘ |
| serves | European side of Istanbul ⓘ |
| system | Istanbul Metro ⓘ |
| ticketingSystem | contactless smart card ⓘ |
| transportType | rapid transit ⓘ |
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: M9 line Description of subject: The M9 line is a rapid transit route within the Istanbul Metro system serving the city’s European side.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.