M20 line
E646536
The M20 line is a rapid transit route within the Istanbul Metro system, serving as part of the city's urban rail network.
All labels observed (1)
| Label | Occurrences |
|---|---|
| M20 line canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7175664 — 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: M20 line Context triple: [Istanbul Metro, hasLine, M20 line]
-
A.
M2 line
The M2 line is a fully automated metro line in Lausanne, Switzerland, running on a steep north–south route that connects the city center with surrounding districts and the lakeshore.
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B.
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.
-
C.
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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D.
M3 line
The M3 line is a rapid transit route within the Ankara Metro system serving parts of Turkey’s capital city.
-
E.
M4 line
The M4 line is a rapid transit route within the Ankara Metro system serving passengers in Turkey’s 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: M20 line Target entity description: The M20 line is a rapid transit route within the Istanbul Metro system, serving as part of the city's urban rail network.
-
A.
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.
-
B.
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.
-
C.
M2 line
The M2 line is a fully automated metro line in Lausanne, Switzerland, running on a steep north–south route that connects the city center with surrounding districts and the lakeshore.
-
D.
M3 line
The M3 line is a rapid transit route within the Ankara Metro system serving parts of Turkey’s capital city.
-
E.
M4 line
The M4 line is a rapid transit route within the Ankara Metro system serving passengers in Turkey’s capital city.
- F. None of above. chosen
Statements (9)
| Predicate | Object |
|---|---|
| instanceOf | rapid transit line ⓘ |
| country | Turkey ⓘ |
| locatedIn |
Istanbul
ⓘ
Turkey ⓘ |
| networkRole | urban rail route ⓘ |
| partOf | Istanbul Metro ⓘ |
| serves | urban rail network of Istanbul ⓘ |
| system |
Istanbul Metro system
ⓘ
linked to:
Istanbul Metro
|
| 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: M20 line Description of subject: The M20 line is a rapid transit route within the Istanbul Metro system, serving as part of the city's urban rail network.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.