Nord-Sud line A
E777570
Nord-Sud line A was the original name of what is now Paris Métro Line 12, a north–south underground railway line in Paris.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Nord-Sud Line A | 2 |
| Nord-Sud Line C | 1 |
| Nord-Sud line A canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9088894 — 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: Nord-Sud line A Context triple: [Paris Métro line 12, formerName, Nord-Sud line A]
-
A.
Nord-Sud Line B
Nord-Sud Line B was the original name of what is now Paris Métro Line 13, a major north–south subway line in the French capital.
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B.
Paris–Montargis line
The Paris–Montargis line is a French railway route connecting Paris with the town of Montargis, serving numerous suburban and regional communities in the Île-de-France and Centre-Val de Loire regions.
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C.
Lyon Metro line A
Lyon Metro line A is one of the main lines of the Lyon rapid transit system in France, running east–west through the city center and connecting key districts and transport hubs.
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D.
Lyon Metro Line B
Lyon Metro Line B is a major north–south rapid transit line in Lyon’s metro system, connecting key districts and transport hubs including the Part-Dieu business district and railway station.
-
E.
Metro Line 5
Metro Line 5 is a rapid transit route within a city's metro system that connects with Metro Line 6 at one or more interchange stations.
- 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: Nord-Sud line A Target entity description: Nord-Sud line A was the original name of what is now Paris Métro Line 12, a north–south underground railway line in Paris.
-
A.
Nord-Sud Line B
Nord-Sud Line B was the original name of what is now Paris Métro Line 13, a major north–south subway line in the French capital.
-
B.
Paris–Montargis line
The Paris–Montargis line is a French railway route connecting Paris with the town of Montargis, serving numerous suburban and regional communities in the Île-de-France and Centre-Val de Loire regions.
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C.
Lyon Metro line A
Lyon Metro line A is one of the main lines of the Lyon rapid transit system in France, running east–west through the city center and connecting key districts and transport hubs.
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D.
Lyon Metro Line B
Lyon Metro Line B is a major north–south rapid transit line in Lyon’s metro system, connecting key districts and transport hubs including the Part-Dieu business district and railway station.
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E.
Metro Line 5
Metro Line 5 is a rapid transit route within a city's metro system that connects with Metro Line 6 at one or more interchange stations.
- F. None of above. chosen
Statements (32)
| Predicate | Object |
|---|---|
| instanceOf |
former name of a metro line
ⓘ
rapid transit line ⓘ |
| alsoKnownAs | Ligne A du Nord-Sud NERFINISHED ⓘ |
| cityServed | Paris NERFINISHED ⓘ |
| colorOnNordSudPlans | green ⓘ |
| connectedTo | Nord-Sud line B NERFINISHED ⓘ |
| country | France ⓘ |
| electrification | 750 V DC third rail ⓘ |
| fareSystem | Paris Métro fare system ⓘ |
| hasFormerName | Nord-Sud line A NERFINISHED ⓘ |
| hasSuccessorDesignation | Line 12 NERFINISHED ⓘ |
| historicalSignificance | one of the original Nord-Sud Company lines ⓘ |
| infrastructureType | underground ⓘ |
| integrationDate | 27 March 1931 ⓘ |
| locatedIn | Paris ⓘ |
| network | Nord-Sud Company network NERFINISHED ⓘ |
| openingYearFirstSection | 1910s ⓘ |
| operatedBy | Compagnie du chemin de fer électrique souterrain Nord-Sud de Paris NERFINISHED ⓘ |
| operatorAfterIntegration | Compagnie du chemin de fer métropolitain de Paris NERFINISHED ⓘ |
| originalNameOf | Paris Métro Line 12 NERFINISHED ⓘ |
| partOf | Paris Métro NERFINISHED ⓘ |
| railGauge | standard gauge ⓘ |
| regionServed | Île-de-France NERFINISHED ⓘ |
| routeOrientation | north–south ⓘ |
| status | renamed ⓘ |
| successor | Paris Métro Line 12 NERFINISHED ⓘ |
| system | Paris Métro NERFINISHED ⓘ |
| terminusAfterCompletion |
Mairie d’Issy
NERFINISHED
ⓘ
Porte de la Chapelle NERFINISHED ⓘ |
| trackConfiguration | double track ⓘ |
| transformation | integrated into the CMP network ⓘ |
| transportMode | underground railway ⓘ |
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: Nord-Sud line A Description of subject: Nord-Sud line A was the original name of what is now Paris Métro Line 12, a north–south underground railway line in Paris.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Nord-Sud Line A
Compagnie du chemin de fer électrique souterrain Nord-Sud de Paris
→
operatedLine
→
Nord-Sud line A
ⓘ
this entity surface form:
Nord-Sud Line A
Compagnie du chemin de fer électrique souterrain Nord-Sud de Paris
→
operatedLine
→
Nord-Sud line A
ⓘ
this entity surface form:
Nord-Sud Line C