Ha'penny Bridge
E51765
Ha'penny Bridge is a historic cast-iron pedestrian bridge over the River Liffey and one of Dublin’s most iconic symbols.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Ha'penny Bridge canonical | 8 |
| Liffey Bridge | 2 |
| Ha’penny Bridge | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T407141 — 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: Ha'penny Bridge Context triple: [Dublin, hasLandmark, Ha'penny Bridge]
-
A.
Trinity Bridge
Trinity Bridge is a distinctive three-way footbridge in Greater Manchester, England, designed by architect Santiago Calatrava to link Salford and Manchester across the River Irwell.
-
B.
Prince of Wales Bridge
The Prince of Wales Bridge is a major road bridge spanning the River Severn between England and Wales, carrying the M4 motorway as a key cross-border transport link.
-
C.
Gapstow Bridge
Gapstow Bridge is a picturesque stone arch bridge in New York City's Central Park, known for its iconic views of the park and Midtown Manhattan skyline.
-
D.
Bow Bridge
Bow Bridge is an iconic cast-iron pedestrian bridge in New York City's Central Park, renowned for its elegant design and scenic views over the park's lakes and landscapes.
-
E.
Runnymede Bridge
Runnymede Bridge is a road bridge over the River Thames in Surrey, England, carrying the M25 motorway near the historic meadow of Runnymede.
- 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: Ha'penny Bridge Target entity description: Ha'penny Bridge is a historic cast-iron pedestrian bridge over the River Liffey and one of Dublin’s most iconic symbols.
-
A.
Trinity Bridge
Trinity Bridge is a distinctive three-way footbridge in Greater Manchester, England, designed by architect Santiago Calatrava to link Salford and Manchester across the River Irwell.
-
B.
Prince of Wales Bridge
The Prince of Wales Bridge is a major road bridge spanning the River Severn between England and Wales, carrying the M4 motorway as a key cross-border transport link.
-
C.
Gapstow Bridge
Gapstow Bridge is a picturesque stone arch bridge in New York City's Central Park, known for its iconic views of the park and Midtown Manhattan skyline.
-
D.
Bow Bridge
Bow Bridge is an iconic cast-iron pedestrian bridge in New York City's Central Park, renowned for its elegant design and scenic views over the park's lakes and landscapes.
-
E.
Runnymede Bridge
Runnymede Bridge is a road bridge over the River Thames in Surrey, England, carrying the M25 motorway near the historic meadow of Runnymede.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
arch bridge
ⓘ
cast-iron bridge ⓘ historic structure ⓘ pedestrian bridge ⓘ tourist attraction ⓘ |
| alsoKnownAs |
Ha'penny Bridge
ⓘ
surface form:
Liffey Bridge
|
| builder | Coalbrookdale Company ⓘ |
| connects |
Liffey Street
ⓘ
Merchant's Arch ⓘ |
| country | Ireland ⓘ |
| crosses | River Liffey ⓘ |
| designer | John Windsor ⓘ |
| hasAccessFrom |
Northside of Dublin city centre
ⓘ
Temple Bar district ⓘ
surface form:
Temple Bar area
|
| hasApproximateLength | 43 metres ⓘ |
| hasApproximateWidth | 3.7 metres ⓘ |
| hasColor | white ⓘ |
| hasCulturalSignificance |
featured in films and literature
ⓘ
frequently depicted in art and photography ⓘ popular meeting place ⓘ |
| hasDesign | single-span arch ⓘ |
| hasEngineeringStyle | early 19th-century ironwork ⓘ |
| hasFeature |
cast-iron railings
ⓘ
ornamental lamps ⓘ |
| hasHistoricalUse |
primary pedestrian crossing over River Liffey in central Dublin
ⓘ
toll bridge ⓘ |
| hasMaintenanceAuthority | Dublin City Council ⓘ |
| hasOwner | Dublin City Council ⓘ |
| hasSpanType | wrought iron arch ⓘ |
| hasTrafficRestriction | pedestrians only ⓘ |
| heritageDesignation | listed structure ⓘ |
| heritageStatus | protected structure ⓘ |
| isIconicFor | Dublin ⓘ |
| locatedIn |
Dublin
ⓘ
Dublin ⓘ
surface form:
Dublin city centre
|
| material | cast iron ⓘ |
| namedAfter | half penny toll ⓘ |
| nickname | Ha'penny Bridge self-link ⓘ |
| officialName |
Ha'penny Bridge
self-linksurface differs
ⓘ
surface form:
Liffey Bridge
|
| opened | 1816 ⓘ |
| originalName | Wellington Bridge ⓘ |
| symbolOf | Dublin ⓘ |
| tollAbolished | 1919 ⓘ |
| tollIntroduced | 1816 ⓘ |
| underwentRenovation | 2001 ⓘ |
| usedFor | pedestrian traffic ⓘ |
| yearCompleted | 1816 ⓘ |
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: Ha'penny Bridge Description of subject: Ha'penny Bridge is a historic cast-iron pedestrian bridge over the River Liffey and one of Dublin’s most iconic symbols.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Liffey Bridge
this entity surface form:
Liffey Bridge
this entity surface form:
Ha’penny Bridge