Dom Luís I Bridge
E426964
Dom Luís I Bridge is a double-deck iron arch bridge spanning the Douro River in Porto, Portugal, renowned as one of the city’s most iconic landmarks.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Dom Luís I Bridge canonical | 8 |
| Dom Luís I Bridge (upper deck access from centre) | 1 |
| Infante Bridge connection to Porto | 1 |
| Ponte de Dom Luís I | 1 |
| Ponte do Porto (Portugal) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4255970 — 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: Dom Luís I Bridge Context triple: [Porto, hasMajorBridge, Dom Luís I Bridge]
-
A.
Braga Bridge
The Braga Bridge is a major steel truss highway bridge carrying Interstate 195 over the Taunton River in Fall River, Massachusetts.
-
B.
25 de Abril Bridge
The 25 de Abril Bridge is a large suspension bridge in Lisbon, Portugal, often compared to San Francisco’s Golden Gate Bridge for its similar appearance and iconic status.
-
C.
Maria Pia Bridge
Maria Pia Bridge is a historic 19th-century iron railway arch bridge spanning the Douro River in Porto, Portugal, renowned for its pioneering engineering and elegant single-span design.
-
D.
Ponte Grande bridge
The Ponte Grande bridge is a strategically important crossing near Syracuse in Sicily that was a key objective for Allied airborne forces during the 1943 invasion of the island in World War II.
-
E.
Juan Pablo II Bridge
Juan Pablo II Bridge is a major road bridge in Chile that spans the Biobío River, connecting parts of the city of Concepción and serving as an important regional transport link.
- 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: Dom Luís I Bridge Target entity description: Dom Luís I Bridge is a double-deck iron arch bridge spanning the Douro River in Porto, Portugal, renowned as one of the city’s most iconic landmarks.
-
A.
Braga Bridge
The Braga Bridge is a major steel truss highway bridge carrying Interstate 195 over the Taunton River in Fall River, Massachusetts.
-
B.
25 de Abril Bridge
The 25 de Abril Bridge is a large suspension bridge in Lisbon, Portugal, often compared to San Francisco’s Golden Gate Bridge for its similar appearance and iconic status.
-
C.
Maria Pia Bridge
Maria Pia Bridge is a historic 19th-century iron railway arch bridge spanning the Douro River in Porto, Portugal, renowned for its pioneering engineering and elegant single-span design.
-
D.
Ponte Grande bridge
The Ponte Grande bridge is a strategically important crossing near Syracuse in Sicily that was a key objective for Allied airborne forces during the 1943 invasion of the island in World War II.
-
E.
Juan Pablo II Bridge
Juan Pablo II Bridge is a major road bridge in Chile that spans the Biobío River, connecting parts of the city of Concepción and serving as an important regional transport link.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
arch bridge
ⓘ
double-deck bridge ⓘ iron bridge ⓘ rail bridge ⓘ road bridge ⓘ tourist attraction ⓘ |
| carries |
Porto Metro Line D
ⓘ
linked to:
Porto Metro
motor vehicles ⓘ pedestrians ⓘ |
| cityServed |
Porto
ⓘ
Vila Nova de Gaia ⓘ
linked to:
Vila Nova de Gaia, Portugal
|
| completionDate | 1886 ⓘ |
| connects |
Porto
ⓘ
Vila Nova de Gaia ⓘ
linked to:
Vila Nova de Gaia, Portugal
|
| constructionStartDate | 1881 ⓘ |
| country | Portugal ⓘ |
| crosses | Douro River ⓘ |
| deckCount | 2 ⓘ |
| designer | Théophile Seyrig ⓘ |
| height | about 44.6 metres above water level ⓘ |
| heritageStatus | UNESCO World Heritage Site context (Historic Centre of Porto, Luiz I Bridge and Monastery of Serra do Pilar) ⓘ |
| length | about 385.25 metres ⓘ |
| locatedIn |
Porto
ⓘ
Vila Nova de Gaia ⓘ
linked to:
Vila Nova de Gaia, Portugal
|
| locatedInCountry | Portugal ⓘ |
| locationOnRiver | between Ribeira and Vila Nova de Gaia riverfronts ⓘ |
| lowerDeckUsedFor |
pedestrian traffic
ⓘ
road traffic ⓘ |
| mainSpanLength | about 172 metres ⓘ |
| material | wrought iron ⓘ |
| municipality |
Porto
ⓘ
Vila Nova de Gaia ⓘ
linked to:
Vila Nova de Gaia, Portugal
|
| name | Dom Luís I Bridge ⓘ |
| namedAfter | King Luís I of Portugal ⓘ |
| nativeName |
Ponte de Dom Luís I
ⓘ
linked to:
Dom Luís I Bridge
|
| notableFor |
double-deck iron arch design
ⓘ
iconic views over Porto and Douro River ⓘ |
| openingDate | 1886 ⓘ |
| partOf | historic centre of Porto urban landscape ⓘ |
| previousStructureReplaced | Ponte Pênsil do Porto (suspension bridge) ⓘ |
| railwayAdaptation | upper deck adapted for light rail (Porto Metro) in early 2000s ⓘ |
| region | Norte Region ⓘ |
| status | in use ⓘ |
| structureType | metal arch ⓘ |
| tourismImportance | major landmark of Porto ⓘ |
| upperDeckUsedFor |
metro line
ⓘ
pedestrian traffic ⓘ |
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: Dom Luís I Bridge Description of subject: Dom Luís I Bridge is a double-deck iron arch bridge spanning the Douro River in Porto, Portugal, renowned as one of the city’s most iconic landmarks.
Referenced by (12)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Vila Nova de Gaia, Portugal
linked to: Dom Luís I Bridge
linked to: Dom Luís I Bridge
linked to: Dom Luís I Bridge
linked to: Dom Luís I Bridge
subject linked to:
Line D