Line C
E1009584
Line C is one of the routes of the Porto Metro light rail network in Porto, Portugal, serving suburban and urban areas along its corridor.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Line C canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T12883101 — 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: Line C Context triple: [Porto Metro, hasLine, Line C]
-
A.
Line C
Line C is one of the routes of the Strasbourg tramway network, providing urban light-rail transit service within the city and its suburbs.
-
B.
Line C
Line C is one of the main lines of the Buenos Aires Underground, running north–south through central Buenos Aires and connecting key transport hubs in the city.
-
C.
Line C
Line C is one of the main lines of the Prague Metro, running in a north–south direction and serving as a key backbone of the city’s rapid transit network.
-
D.
C Line
The C Line is a light rail route in the Los Angeles Metro Rail system that runs primarily along the I-105 freeway corridor, connecting coastal and inland communities in the South Bay region.
-
E.
C Line
The C Line is a local New York City Subway service that runs along the Eighth Avenue Line in Manhattan and through parts of Brooklyn and Queens.
- 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: Line C Target entity description: Line C is one of the routes of the Porto Metro light rail network in Porto, Portugal, serving suburban and urban areas along its corridor.
-
A.
Line C
Line C is one of the main lines of the Buenos Aires Underground, running north–south through central Buenos Aires and connecting key transport hubs in the city.
-
B.
Line C
Line C is one of the routes of the Strasbourg tramway network, providing urban light-rail transit service within the city and its suburbs.
-
C.
Line C
Line C is one of the main lines of the Prague Metro, running in a north–south direction and serving as a key backbone of the city’s rapid transit network.
-
D.
C Line
The C Line is a light rail route in the Los Angeles Metro Rail system that runs primarily along the I-105 freeway corridor, connecting coastal and inland communities in the South Bay region.
-
E.
C Line
The C Line is a local New York City Subway service that runs along the Eighth Avenue Line in Manhattan and through parts of Brooklyn and Queens.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
light rail line
ⓘ
metro line ⓘ |
| connectsWith | other Porto Metro lines at interchange stations ⓘ |
| country | Portugal ⓘ |
| electrification | overhead line ⓘ |
| fareSystem | Andante ⓘ |
| hasAccessibility | step-free access at stations ⓘ |
| hasColor | green ⓘ |
| hasOwner |
Metro do Porto, S.A.
ⓘ
linked to:
Porto Metro
|
| hasPriority | segregated right-of-way on most of its length ⓘ |
| hasRouteType |
radial line
ⓘ
suburban corridor ⓘ |
| hasServiceType |
commuter rail-like service
ⓘ
urban transit service ⓘ |
| isPartOfSystem |
Greater Porto public transport network
ⓘ
linked to:
Porto metropolitan public transport network
|
| lineDesignation | C ⓘ |
| locatedIn |
Porto
ⓘ
Portugal ⓘ |
| modeOfTransport | light rail ⓘ |
| operatedBy |
Metro do Porto
ⓘ
linked to:
Porto Metro
|
| partOf | Porto Metro ⓘ |
| publicTransportType | railway public transport ⓘ |
| safetySystem | train protection system ⓘ |
| serves |
suburban areas of Porto
ⓘ
urban areas of Porto ⓘ |
| ticketingSystem | contactless smart card ⓘ |
| trackGauge | standard gauge ⓘ |
| transportNetwork |
Porto Metro light rail network
ⓘ
linked to:
Porto Metro
|
| usesRollingStock |
Porto Metro light rail vehicles
ⓘ
linked to:
CAF Urbos 3 trams
|
| usesSignallingSystem | light rail signalling ⓘ |
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: Line C Description of subject: Line C is one of the routes of the Porto Metro light rail network in Porto, Portugal, serving suburban and urban areas along its corridor.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.