Britannia Bridge, Menai Strait
E347886
Britannia Bridge is a historic 19th-century railway bridge spanning the Menai Strait in Wales, originally designed by engineer Robert Stephenson as a pioneering tubular iron structure.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Britannia Bridge (nearby) | 1 |
| Britannia Bridge (region) | 1 |
| Britannia Bridge, Menai Strait canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3330040 — 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: Britannia Bridge, Menai Strait Context triple: [Robert Stephenson, notableWork, Britannia Bridge, Menai Strait]
-
A.
Menai Bridge
Menai Bridge is a small town on the Isle of Anglesey in Wales, best known for the historic suspension bridge that connects the island to the mainland across the Menai Strait.
-
B.
Barmouth Bridge
Barmouth Bridge is a historic wooden viaduct carrying the railway across the Mawddach Estuary near Barmouth in Gwynedd, Wales.
-
C.
Briton Ferry Bridge
Briton Ferry Bridge is a historic road bridge in South Wales that spans the River Neath, linking the town of Briton Ferry with Neath and the wider Neath Port Talbot area.
-
D.
Tay Rail Bridge
The Tay Rail Bridge is a historic railway bridge in Scotland that carries trains across the Firth of Tay between Dundee and the county of Fife.
-
E.
Ha'penny Bridge
Ha'penny Bridge is a historic cast-iron pedestrian bridge over the River Liffey and one of Dublin’s most iconic symbols.
- 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: Britannia Bridge, Menai Strait Target entity description: Britannia Bridge is a historic 19th-century railway bridge spanning the Menai Strait in Wales, originally designed by engineer Robert Stephenson as a pioneering tubular iron structure.
-
A.
Menai Bridge
Menai Bridge is a small town on the Isle of Anglesey in Wales, best known for the historic suspension bridge that connects the island to the mainland across the Menai Strait.
-
B.
Barmouth Bridge
Barmouth Bridge is a historic wooden viaduct carrying the railway across the Mawddach Estuary near Barmouth in Gwynedd, Wales.
-
C.
Briton Ferry Bridge
Briton Ferry Bridge is a historic road bridge in South Wales that spans the River Neath, linking the town of Briton Ferry with Neath and the wider Neath Port Talbot area.
-
D.
Tay Rail Bridge
The Tay Rail Bridge is a historic railway bridge in Scotland that carries trains across the Firth of Tay between Dundee and the county of Fife.
-
E.
Ha'penny Bridge
Ha'penny Bridge is a historic cast-iron pedestrian bridge over the River Liffey and one of Dublin’s most iconic symbols.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
19th-century structure
ⓘ
historic bridge ⓘ railway bridge ⓘ |
| carries |
A55 road
NERFINISHED
ⓘ
North Wales Coast Line ⓘ railway traffic ⓘ road traffic ⓘ |
| connects |
Anglesey
ⓘ
surface form:
Island of Anglesey
mainland Wales ⓘ |
| constructionEndDate | 1850 ⓘ |
| constructionStartDate | 1846 ⓘ |
| country | Wales ⓘ |
| crosses | Menai Strait ⓘ |
| currentMaterial |
concrete
ⓘ
steel ⓘ |
| damagedIn | 1970 ⓘ |
| designer | Robert Stephenson ⓘ |
| hasDesign |
arch bridge
ⓘ
box girder ⓘ |
| hasNumberOfLevels | 2 ⓘ |
| hasPiersOn | Britannia Rock ⓘ |
| heritageStatus | Grade II listed structure ⓘ |
| locatedIn |
Menai Strait
ⓘ
United Kingdom ⓘ Wales ⓘ |
| locatedNear |
Bangor
ⓘ
surface form:
Bangor, Gwynedd
Llanfairpwllgwyngyll ⓘ |
| lowerLevelCarries | rail traffic ⓘ |
| namedAfter | Britannia Rock ⓘ |
| near |
Menai Bridge
ⓘ
surface form:
Menai Suspension Bridge
|
| notableFor |
early large-scale box girder engineering
ⓘ
pioneering tubular iron construction ⓘ |
| openedFor | rail traffic ⓘ |
| openingDate | 1850 ⓘ |
| originalDesign | tubular iron bridge ⓘ |
| originalDesignType | tubular bridge ⓘ |
| originalFunction | railway bridge only ⓘ |
| originalMaterial | wrought iron ⓘ |
| partOf |
North Wales Expressway
ⓘ
surface form:
A55 North Wales Expressway
|
| passesOver | tidal strait ⓘ |
| railwayOwner | Network Rail ⓘ |
| reconstructedIn | 1970s ⓘ |
| reconstructionReason | fire damage ⓘ |
| reconstructionType | concrete and steel arch bridge ⓘ |
| region | Gwynedd ⓘ |
| roadAuthority | Welsh Government ⓘ |
| significantEvent | fire of 1970 ⓘ |
| upperLevelCarries | road 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: Britannia Bridge, Menai Strait Description of subject: Britannia Bridge is a historic 19th-century railway bridge spanning the Menai Strait in Wales, originally designed by engineer Robert Stephenson as a pioneering tubular iron structure.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Britannia Bridge (region)
this entity surface form:
Britannia Bridge (nearby)