M1 line
E646533
The M1 line is one of the main rapid transit routes of the Istanbul Metro, connecting central districts with key transport hubs such as the airport and intercity bus terminal.
All labels observed (1)
| Label | Occurrences |
|---|---|
| M1 line canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T7175644 — 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: M1 line Context triple: [Istanbul Metro, hasLine, M1 line]
-
A.
M1 line
The M1 line is a primary rapid transit route of the Ankara Metro system serving key districts of Turkey’s capital city.
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B.
M1 line
The M1 line is one of the main lines of the Helsinki Metro, running east–west through the Helsinki region and serving several key suburban and central stations.
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C.
M1 line
The M1 line is a light metro route in Lausanne, Switzerland, connecting the city center with the university and lakeside areas as part of the Lausanne Métro network.
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D.
M2 line
The M2 line is one of the main lines of the Helsinki Metro rapid transit system, serving key districts across the Helsinki metropolitan area.
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E.
M2 line
The M2 line is a major rapid transit route within the Ankara Metro system in Turkey, serving key districts of the capital 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: M1 line Target entity description: The M1 line is one of the main rapid transit routes of the Istanbul Metro, connecting central districts with key transport hubs such as the airport and intercity bus terminal.
-
A.
M1 line
The M1 line is a primary rapid transit route of the Ankara Metro system serving key districts of Turkey’s capital city.
-
B.
M1 line
The M1 line is one of the main lines of the Helsinki Metro, running east–west through the Helsinki region and serving several key suburban and central stations.
-
C.
M1 line
The M1 line is a light metro route in Lausanne, Switzerland, connecting the city center with the university and lakeside areas as part of the Lausanne Métro network.
-
D.
M2 line
The M2 line is one of the main lines of the Helsinki Metro rapid transit system, serving key districts across the Helsinki metropolitan area.
-
E.
M2 line
The M2 line is a major rapid transit route within the Ankara Metro system in Turkey, serving key districts of the capital city.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf | rapid transit line ⓘ |
| colorOnMap | red ⓘ |
| connectsCentralDistrictsWith |
airport
ⓘ
intercity bus terminal ⓘ |
| connectsTo |
Esenler Coach Terminal
NERFINISHED
ⓘ
Istanbul Atatürk Airport NERFINISHED ⓘ M2 line NERFINISHED ⓘ Marmaray line NERFINISHED ⓘ Metrobus system NERFINISHED ⓘ Otogar station NERFINISHED ⓘ Yenikapı Transfer Center NERFINISHED ⓘ |
| country | Turkey ⓘ |
| electrification | 750 V DC third rail ⓘ |
| gauge | standard gauge ⓘ |
| hasBranch |
M1A branch
ⓘ
M1B branch NERFINISHED ⓘ |
| hasStation |
Aksaray station
NERFINISHED
ⓘ
Atatürk Airport station NERFINISHED ⓘ Kirazlı station NERFINISHED ⓘ Otogar station NERFINISHED ⓘ Yenikapı station NERFINISHED ⓘ |
| hasTerminus |
Atatürk Airport station
NERFINISHED
ⓘ
Kirazlı station NERFINISHED ⓘ Yenikapı station NERFINISHED ⓘ |
| lineCode | M1 ⓘ |
| locatedIn |
Istanbul
ⓘ
Turkey ⓘ |
| M1A branchTerminus | Atatürk Airport station NERFINISHED ⓘ |
| M1B branchTerminus | Kirazlı station NERFINISHED ⓘ |
| numberOfTracks | 2 ⓘ |
| openingSection | Aksaray – Kartaltepe–Kocatepe NERFINISHED ⓘ |
| operator | Metro Istanbul NERFINISHED ⓘ |
| owner | Istanbul Metropolitan Municipality NERFINISHED ⓘ |
| partOf | Istanbul Metro NERFINISHED ⓘ |
| serves |
Esenler Coach Terminal area
NERFINISHED
ⓘ
Istanbul Atatürk Airport area NERFINISHED ⓘ central districts of Istanbul ⓘ |
| startsOperation | 1989 ⓘ |
| system | Istanbul Metro NERFINISHED ⓘ |
| 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: M1 line Description of subject: The M1 line is one of the main rapid transit routes of the Istanbul Metro, connecting central districts with key transport hubs such as the airport and intercity bus terminal.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.