Iberian gauge
E140896
Iberian gauge is a broad railway track gauge, wider than the international standard gauge, predominantly used on mainline railways in Spain and Portugal.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Iberian gauge canonical | 73 |
| Iberian broad gauge | 1 |
| Iberian gauge network | 1 |
| Iberian loading gauge | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1235995 — 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: Iberian gauge Context triple: [Cercanías Madrid, railGauge, Iberian gauge]
-
A.
Algarve line
The Algarve line is a major railway route in southern Portugal that connects the region’s coastal towns and cities along the Algarve.
-
B.
Iberia
Iberia is the flag carrier airline of Spain, operating an extensive network of domestic and international flights, particularly linking Europe with Latin America.
-
C.
Seville Metro
Seville Metro is a rapid transit system serving the city of Seville and its metropolitan area in southern Spain.
-
D.
Madrid Metro
Madrid Metro is the extensive rapid transit system serving Spain’s capital, known for its large network, frequent service, and role as a primary mode of urban transportation.
-
E.
Risca
Risca is a town in south Wales situated in the county borough of Caerphilly, near Newport, with a history rooted in coal mining and industry.
- 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: Iberian gauge Target entity description: Iberian gauge is a broad railway track gauge, wider than the international standard gauge, predominantly used on mainline railways in Spain and Portugal.
-
A.
Algarve line
The Algarve line is a major railway route in southern Portugal that connects the region’s coastal towns and cities along the Algarve.
-
B.
Iberia
Iberia is the flag carrier airline of Spain, operating an extensive network of domestic and international flights, particularly linking Europe with Latin America.
-
C.
Seville Metro
Seville Metro is a rapid transit system serving the city of Seville and its metropolitan area in southern Spain.
-
D.
Madrid Metro
Madrid Metro is the extensive rapid transit system serving Spain’s capital, known for its large network, frequent service, and role as a primary mode of urban transportation.
-
E.
Risca
Risca is a town in south Wales situated in the county borough of Caerphilly, near Newport, with a history rooted in coal mining and industry.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
broad gauge
ⓘ
railway track gauge ⓘ |
| adoptedBy |
Portuguese State Railways
ⓘ
linked to:
Portuguese national rail network
Spanish State Railways ⓘ
linked to:
Renfe Operadora
|
| affects |
cross-border rail operations between Portugal and Spain
ⓘ
cross-border rail operations between Spain and France ⓘ |
| alsoKnownAs |
Iberian broad gauge
ⓘ
linked to:
Iberian gauge
|
| causes | break-of-gauge with standard gauge networks ⓘ |
| compatibleWith | variable gauge axle systems ⓘ |
| countryUsedIn |
Portugal
ⓘ
Spain ⓘ |
| designatedAsBroadGaugeBy | UIC ⓘ |
| hasEngineeringConsequence |
different bogie designs from standard gauge
ⓘ
wider rolling stock bodies possible ⓘ |
| hasHistoricalReason |
alignment with Spanish practice in 19th century Portugal
ⓘ
national defense and engineering considerations in 19th century Spain ⓘ |
| hasIssue | need for gauge-changing facilities at borders ⓘ |
| hasLoadingGauge |
Iberian loading gauge
ⓘ
linked to:
Iberian gauge
|
| historicallyIntroducedIn | 19th century ⓘ |
| interoperabilityIssueWith |
European standard gauge network
ⓘ
linked to:
European rail network
|
| isSubjectOf | European rail interoperability policy discussions ⓘ |
| measurementSystem | metric ⓘ |
| partiallyReplacedBy |
standard gauge high-speed lines in Portugal
ⓘ
standard gauge high-speed lines in Spain ⓘ |
| railwayNetworkType |
conventional network in Portugal
ⓘ
conventional network in Spain ⓘ |
| railwaySystemComponentOf |
Portuguese railway system
ⓘ
Spanish railway system ⓘ |
| regionUsedIn | Iberian Peninsula ⓘ |
| standardGaugeWidthComparison | 1435 mm ⓘ |
| trackGaugeWidth |
1668 mm
ⓘ
5 ft 5 21⁄32 in ⓘ |
| usedFor |
freight rail services in Portugal
ⓘ
freight rail services in Spain ⓘ passenger rail services in Portugal ⓘ passenger rail services in Spain ⓘ |
| usedOn |
mainline railways in Portugal
ⓘ
mainline railways in Spain ⓘ |
| usedOnInfrastructureManagedBy |
ADIF
ⓘ
Infraestruturas de Portugal ⓘ |
| widerThan | standard gauge ⓘ |
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: Iberian gauge Description of subject: Iberian gauge is a broad railway track gauge, wider than the international standard gauge, predominantly used on mainline railways in Spain and Portugal.
Referenced by (76)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Cercanías Madrid commuter rail
linked to: Iberian gauge
linked to: Iberian gauge
linked to: Iberian gauge